In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.

It is, therefore, affected by a vulnerability as referenced in the ALAS2022-2022-034 advisory.

    A vulnerability was found in zsh in the parsecolorchar() function of prompt.c file. This flaw allows an     attacker to perform code execution if they control a command output inside the prompt, as stated by a %F%K     argument. This occurs because of recursive PROMPT_SUBST expansion. (CVE-2021-45444)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

An update of the zsh package has been released.

The remote host is affected by the vulnerability described in GLSA-202407-01 (Zsh: Prompt Expansion Vulnerability)

    Multiple vulnerabilities have been discovered in Zsh. Please review the CVE identifiers referenced below     for details.

Tenable has extracted the preceding description block directly from the Gentoo Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 9 host has packages installed that are affected by a vulnerability as referenced in the zsh-5.8-9.el9 build changelog.

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2022:2120 advisory.

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2023-035 advisory.

    A vulnerability was found in zsh in the parsecolorchar() function of prompt.c file. This flaw allows an     attacker to perform code execution if they control a command output inside the prompt, as stated by a %F%K     argument. This occurs because of recursive PROMPT_SUBST expansion. (CVE-2021-45444)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by a vulnerability as referenced in the ALAS2022-2022-180 advisory.

    A vulnerability was found in zsh in the parsecolorchar() function of prompt.c file. This flaw allows an     attacker to perform code execution if they control a command output inside the prompt, as stated by a %F%K     argument. This occurs because of recursive PROMPT_SUBST expansion. (CVE-2021-45444)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by a vulnerability as referenced in the ALAS2022-2022-117 advisory.

    A vulnerability was found in zsh in the parsecolorchar() function of prompt.c file. This flaw allows an     attacker to perform code execution if they control a command output inside the prompt, as stated by a %F%K     argument. This occurs because of recursive PROMPT_SUBST expansion. (CVE-2021-45444)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to the versions of the zsh package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is running a version of macOS / Mac OS X that is prior to Catalina Security Update 2022-004.
It is, therefore, affected by multiple vulnerabilities :

  - zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many     distant matches. (CVE-2018-25032)

  - A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL     pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for     requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This     issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included). (CVE-2021-44224)

  - A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser     (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the     vulnerability though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and     earlier. (CVE-2021-44790)

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

  - A flaw was found in Unzip. The vulnerability occurs during the conversion of a wide string to a local     string that leads to a heap of out-of-bound write. This flaw allows an attacker to input a specially     crafted zip file, leading to a crash or code execution. (CVE-2022-0530)

  - The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop     forever for non-prime moduli. Internally this function is used when parsing certificates that contain     elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point     encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has     invalid explicit curve parameters. Since certificate parsing happens prior to verification of the     certificate signature, any process that parses an externally supplied certificate may thus be subject to a     denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they     can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients     consuming server certificates - TLS servers consuming client certificates - Hosting providers taking     certificates or private keys from customers - Certificate authorities parsing certification requests from     subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that     use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS     issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate     which makes it slightly harder to trigger the infinite loop. However any operation which requires the     public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-     signed certificate to trigger the loop during verification of the certificate signature. This issue     affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the     15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected     1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc). (CVE-2022-0778)

  - A validation issue was addressed with improved input sanitization. This issue is fixed in iOS 15.3 and     iPadOS 15.3, watchOS 8.4, tvOS 15.3, Safari 15.3, macOS Monterey 12.2. Processing a maliciously crafted     mail message may lead to running arbitrary javascript. (CVE-2022-22589)

  - A logic issue was addressed with improved validation. This issue is fixed in macOS Monterey 12.3. A     malicious application may be able to gain root privileges. (CVE-2022-22665)

  - A carefully crafted request body can cause a read to a random memory area which could cause the process to     crash. This issue affects Apache HTTP Server 2.4.52 and earlier. (CVE-2022-22719)

  - Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered     discarding the request body, exposing the server to HTTP Request Smuggling (CVE-2022-22720)

  - If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems     an integer overflow happens which later causes out of bounds writes. This issue affects Apache HTTP Server     2.4.52 and earlier. (CVE-2022-22721)

  - valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes. (CVE-2022-23308)

Note that Nessus has not tested for this issue but has instead relied only on the operating system's self-reported version number.

The remote host is running a version of macOS / Mac OS X that is 11.x prior to 11.6.6. It is, therefore, affected by multiple vulnerabilities:

  - zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many     distant matches. (CVE-2018-25032)

  - A logic issue was addressed with improved restrictions. This issue is fixed in macOS Monterey 12.1,     watchOS 8.3, iOS 15.2 and iPadOS 15.2, macOS Big Sur 11.6.2. A malicious application may be able to bypass     certain Privacy preferences. (CVE-2021-30946)

  - vim is vulnerable to Heap-based Buffer Overflow (CVE-2021-4136)

  - vim is vulnerable to Out-of-bounds Read (CVE-2021-4166, CVE-2021-4193, CVE-2022-0128)

  - vim is vulnerable to Use After Free (CVE-2021-4173, CVE-2021-4187, CVE-2021-4192)

  - A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL     pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for     requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This     issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included). (CVE-2021-44224)

  - A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser     (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the     vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and     earlier. (CVE-2021-44790)

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

  - Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn     by its CNA. Further investigation showed that it was not a security issue. Notes: none (CVE-2021-46059)

  - A flaw was found in Unzip. The vulnerability occurs during the conversion of a wide string to a local     string that leads to a heap of out-of-bound write. This flaw allows an attacker to input a specially     crafted zip file, leading to a crash or code execution. (CVE-2022-0530)

  - The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop     forever for non-prime moduli. Internally this function is used when parsing certificates that contain     elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point     encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has     invalid explicit curve parameters. Since certificate parsing happens prior to verification of the     certificate signature, any process that parses an externally supplied certificate may thus be subject to a     denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they     can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients     consuming server certificates - TLS servers consuming client certificates - Hosting providers taking     certificates or private keys from customers - Certificate authorities parsing certification requests from     subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that     use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS     issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate     which makes it slightly harder to trigger the infinite loop. However any operation which requires the     public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-     signed certificate to trigger the loop during verification of the certificate signature. This issue     affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the     15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected     1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc). (CVE-2022-0778)

  - A validation issue was addressed with improved input sanitization. This issue is fixed in iOS 15.3 and     iPadOS 15.3, watchOS 8.4, tvOS 15.3, Safari 15.3, macOS Monterey 12.2. Processing a maliciously crafted     mail message may lead to running arbitrary javascript. (CVE-2022-22589)

  - A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur     11.6.6, macOS Monterey 12.3, Security Update 2022-004 Catalina. A remote user may cause an unexpected app     termination or arbitrary code execution (CVE-2022-22630)

  - This issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in iOS     15.4 and iPadOS 15.4, Security Update 2022-004 Catalina, macOS Monterey 12.3, macOS Big Sur 11.6.6. A     malicious application may bypass Gatekeeper checks. (CVE-2022-22663)

  - A logic issue was addressed with improved validation. This issue is fixed in macOS Monterey 12.3. A     malicious application may be able to gain root privileges. (CVE-2022-22665)

  - An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with     improved input validation. This issue is fixed in macOS Monterey 12.3.1, Security Update 2022-004     Catalina, macOS Big Sur 11.6.6. A local user may be able to read kernel memory. (CVE-2022-22674)

  - An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in tvOS     15.5, watchOS 8.6, macOS Big Sur 11.6.6, macOS Monterey 12.3.1, iOS 15.4.1 and iPadOS 15.4.1. An     application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that     this issue may have been actively exploited.. (CVE-2022-22675)

  - A carefully crafted request body can cause a read to a random memory area which could cause the process to     crash. This issue affects Apache HTTP Server 2.4.52 and earlier. (CVE-2022-22719)

  - Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered     discarding the request body, exposing the server to HTTP Request Smuggling (CVE-2022-22720)

  - If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems     an integer overflow happens which later causes out of bounds writes. This issue affects Apache HTTP Server     2.4.52 and earlier. (CVE-2022-22721)

  - valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes. (CVE-2022-23308)

  - An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in Security     Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. Processing a maliciously crafted     AppleScript binary may result in unexpected application termination or disclosure of process memory.
    (CVE-2022-26697)

  - An out-of-bounds read issue was addressed with improved bounds checking. This issue is fixed in Security     Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. Processing a maliciously crafted     AppleScript binary may result in unexpected application termination or disclosure of process memory.
    (CVE-2022-26698)

  - An access issue was addressed with additional sandbox restrictions on third-party applications. This issue     is fixed in tvOS 15.5, iOS 15.5 and iPadOS 15.5, watchOS 8.6, macOS Big Sur 11.6.6, macOS Monterey 12.4. A     sandboxed process may be able to circumvent sandbox restrictions. (CVE-2022-26706)

  - This issue was addressed by removing the vulnerable code. This issue is fixed in macOS Monterey 12.4,     macOS Big Sur 11.6.6. A malicious application may be able to modify protected parts of the file system.
    (CVE-2022-26712)

  - A memory corruption issue was addressed with improved validation. This issue is fixed in tvOS 15.5, iOS     15.5 and iPadOS 15.5, Security Update 2022-004 Catalina, watchOS 8.6, macOS Big Sur 11.6.6, macOS Monterey     12.4. An application may be able to execute arbitrary code with kernel privileges. (CVE-2022-26714)

  - An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Security     Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. An application may be able to gain     elevated privileges. (CVE-2022-26715)

  - An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in macOS     Monterey 12.4, macOS Big Sur 11.6.6. An application may be able to gain elevated privileges.
    (CVE-2022-26718)

  - An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Security     Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. A malicious application may be able     to execute arbitrary code with kernel privileges. (CVE-2022-26720)

  - A memory initialization issue was addressed. This issue is fixed in Security Update 2022-004 Catalina,     macOS Monterey 12.4, macOS Big Sur 11.6.6. A malicious application may be able to gain root privileges.
    (CVE-2022-26721, CVE-2022-26722)

  - A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS     Monterey 12.4, macOS Big Sur 11.6.6. Mounting a maliciously crafted Samba network share may lead to     arbitrary code execution. (CVE-2022-26723)

  - This issue was addressed with improved checks. This issue is fixed in Security Update 2022-004 Catalina,     watchOS 8.6, macOS Monterey 12.4, macOS Big Sur 11.6.6. An app may be able to capture a user's screen.
    (CVE-2022-26726)

  - This issue was addressed with improved entitlements. This issue is fixed in Security Update 2022-004     Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. A malicious application may be able to access     restricted files. (CVE-2022-26728)

  - A logic issue was addressed with improved state management. This issue is fixed in macOS Monterey 12.4,     iOS 15.5 and iPadOS 15.5. A malicious website may be able to track users in Safari private browsing mode.
    (CVE-2022-26731)

  - A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Big Sur     11.6.6. A malicious application may disclose restricted memory. (CVE-2022-26745)

  - This issue was addressed by removing the vulnerable code. This issue is fixed in Security Update 2022-004     Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. A malicious application may be able to bypass Privacy     preferences. (CVE-2022-26746)

  - An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in Security     Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. Processing maliciously crafted web     content may lead to arbitrary code execution. (CVE-2022-26748)

  - A memory corruption issue was addressed with improved input validation. This issue is fixed in iTunes     12.12.4 for Windows, iOS 15.5 and iPadOS 15.5, Security Update 2022-004 Catalina, macOS Big Sur 11.6.6,     macOS Monterey 12.4. Processing a maliciously crafted image may lead to arbitrary code execution.
    (CVE-2022-26751)

  - This issue was addressed with improved environment sanitization. This issue is fixed in Security Update     2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. A malicious application may be able to break     out of its sandbox. (CVE-2022-26755)

  - An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in Security     Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. An application may be able to execute     arbitrary code with kernel privileges. (CVE-2022-26756)

  - A use after free issue was addressed with improved memory management. This issue is fixed in tvOS 15.5,     iOS 15.5 and iPadOS 15.5, Security Update 2022-004 Catalina, watchOS 8.6, macOS Big Sur 11.6.6, macOS     Monterey 12.4. An application may be able to execute arbitrary code with kernel privileges.
    (CVE-2022-26757)

  - A memory corruption issue was addressed with improved memory handling. This issue is fixed in Security     Update 2022-004 Catalina, macOS Big Sur 11.6.6. An application may be able to execute arbitrary code with     kernel privileges. (CVE-2022-26761)

  - An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in tvOS     15.5, iOS 15.5 and iPadOS 15.5, Security Update 2022-004 Catalina, watchOS 8.6, macOS Big Sur 11.6.6,     macOS Monterey 12.4. A malicious application may be able to execute arbitrary code with system privileges.
    (CVE-2022-26763)

  - A certificate parsing issue was addressed with improved checks. This issue is fixed in tvOS 15.5, iOS 15.5     and iPadOS 15.5, Security Update 2022-004 Catalina, watchOS 8.6, macOS Big Sur 11.6.6, macOS Monterey     12.4. A malicious app may be able to bypass signature validation. (CVE-2022-26766)

  - The issue was addressed with additional permissions checks. This issue is fixed in macOS Monterey 12.4,     macOS Big Sur 11.6.6. A malicious application may be able to bypass Privacy preferences. (CVE-2022-26767)

  - A memory corruption issue was addressed with improved state management. This issue is fixed in macOS     Monterey 12.4, watchOS 8.6, tvOS 15.5, macOS Big Sur 11.6.6. An application may be able to execute     arbitrary code with kernel privileges. (CVE-2022-26768)

  - A memory corruption issue was addressed with improved input validation. This issue is fixed in Security     Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. A malicious application may be able     to execute arbitrary code with kernel privileges. (CVE-2022-26769)

  - An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in Security     Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. A malicious application may be able     to execute arbitrary code with kernel privileges. (CVE-2022-26770)

  - This issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.4, macOS Big Sur     11.6.6. An attacker may be able to cause unexpected application termination or arbitrary code execution.
    (CVE-2022-26776)

  - This issue was addressed with improved checks. This issue is fixed in tvOS 15.5, watchOS 8.6, iOS 15.5 and     iPadOS 15.5, macOS Monterey 12.4, macOS Big Sur 11.6.6, Security Update 2022-004 Catalina. A remote user     may be able to cause a denial-of-service. (CVE-2022-32790)

  - A logic issue was addressed with improved state management. This issue is fixed in Security Update     2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. An app may be able to gain elevated     privileges. (CVE-2022-32794)

  - This issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.4, macOS Big Sur     11.6.6. An app may be able to bypass Privacy preferences. (CVE-2022-32882)

Note that Nessus has not tested for these issues but has instead relied only on the operating system's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2022-2120 advisory.

    - do not perform PROMPT_SUBST evaluation on file.file/%K arguments (CVE-2021-45444)
    - improve printing of error messages introduced by the fix of CVE-2019-20044

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2022:2120 advisory.

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2022:2120 advisory.

    The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command     processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports     command-line editing, built-in spelling correction, programmable command completion, shell functions (with     autoloading), a history mechanism, and more.

    Security Fix(es):

    * zsh: Prompt expansion vulnerability (CVE-2021-45444)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CESA-2022:2120 advisory.

  - zsh: Prompt expansion vulnerability (CVE-2021-45444)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5325-1 advisory.

    Sam Foxman discovered that Zsh incorrectly handled certain inputs. An attacker could possibly use this     issue to regain dropped privileges. (CVE-2019-20044)

    It was discovered that Zsh incorrectly handled certain inputs. An attacker could possibly use this issue     to execute arbitrary code. (CVE-2021-45444)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2022:0735-1 advisory.

  - In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by the --no-PRIVILEGED     option. Zsh fails to overwrite the saved uid, so the original privileges can be restored by executing     MODULE_PATH=/dir/with/module zmodload with a module that calls setuid(). (CVE-2019-20044)

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0733-1 advisory.

  - zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the utils.c:checkmailpath     function. A local attacker could exploit this to execute arbitrary code in the context of another user.
    (CVE-2018-1100)

  - In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by the --no-PRIVILEGED     option. Zsh fails to overwrite the saved uid, so the original privileges can be restored by executing     MODULE_PATH=/dir/with/module zmodload with a module that calls setuid(). (CVE-2019-20044)

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0735-1 advisory.

  - In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by the --no-PRIVILEGED     option. Zsh fails to overwrite the saved uid, so the original privileges can be restored by executing     MODULE_PATH=/dir/with/module zmodload with a module that calls setuid(). (CVE-2019-20044)

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0732-1 advisory.

  - In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by the --no-PRIVILEGED     option. Zsh fails to overwrite the saved uid, so the original privileges can be restored by executing     MODULE_PATH=/dir/with/module zmodload with a module that calls setuid(). (CVE-2019-20044)

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of zsh installed on the remote host is prior to 5.8.1-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2022-1757 advisory.

    A vulnerability was found in zsh in the parsecolorchar() function of prompt.c file. This flaw allows an     attacker to perform code execution if they control a command output inside the prompt, as stated by a %F%K     argument. This occurs because of recursive PROMPT_SUBST expansion. (CVE-2021-45444)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 9 host has packages installed that are affected by a vulnerability as referenced in the dla-2926 advisory.

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 10 / 11 host has packages installed that are affected by a vulnerability as referenced in the dsa-5078 advisory.

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the d923fb0c-8c2f-11ec-aa85-0800270512f4 advisory.

  - In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the     prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.
    (CVE-2021-45444)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
212478	Amazon Linux 2022 : zsh, zsh-html (ALAS2022-2022-034)	Nessus	Amazon Linux Local Security Checks	high
204058	Photon OS 3.0: Zsh PHSA-2022-3.0-0376	Nessus	PhotonOS Local Security Checks	high
203406	Photon OS 4.0: Zsh PHSA-2022-4.0-0169	Nessus	PhotonOS Local Security Checks	high
201184	GLSA-202407-01 : Zsh: Prompt Expansion Vulnerability	Nessus	Gentoo Local Security Checks	high
191164	CentOS 9 : zsh-5.8-9.el9	Nessus	CentOS Local Security Checks	high
184479	Rocky Linux 8 : zsh (RLSA-2022:2120)	Nessus	Rocky Linux Local Security Checks	high
173067	Amazon Linux 2023 : zsh, zsh-html (ALAS2023-2023-035)	Nessus	Amazon Linux Local Security Checks	high
166998	Amazon Linux 2022 : zsh, zsh-html (ALAS2022-2022-180)	Nessus	Amazon Linux Local Security Checks	high
164763	Amazon Linux 2022 : zsh, zsh-html (ALAS2022-2022-117)	Nessus	Amazon Linux Local Security Checks	high
161537	EulerOS 2.0 SP3 : zsh (EulerOS-SA-2022-1778)	Nessus	Huawei Local Security Checks	high
161410	macOS 12.x < 12.4 Multiple Vulnerabilities (HT213257)	Nessus	MacOS X Local Security Checks	critical
161402	macOS 10.15.x < Catalina Security Update 2022-004 Catalina (HT213255)	Nessus	MacOS X Local Security Checks	critical
161395	macOS 11.x < 11.6.6 Multiple Vulnerabilities (HT213256)	Nessus	MacOS X Local Security Checks	critical
161282	Oracle Linux 8 : zsh (ELSA-2022-2120)	Nessus	Oracle Linux Local Security Checks	high
161113	AlmaLinux 8 : zsh (ALSA-2022:2120)	Nessus	Alma Linux Local Security Checks	high
161016	RHEL 8 : zsh (RHSA-2022:2120)	Nessus	Red Hat Local Security Checks	high
160960	CentOS 8 : zsh (CESA-2022:2120)	Nessus	CentOS Local Security Checks	high
160139	EulerOS 2.0 SP8 : zsh (EulerOS-SA-2022-1594)	Nessus	Huawei Local Security Checks	high
158905	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS : Zsh vulnerabilities (USN-5325-1)	Nessus	Ubuntu Local Security Checks	high
158643	openSUSE 15 Security Update : zsh (openSUSE-SU-2022:0735-1)	Nessus	SuSE Local Security Checks	high
158618	SUSE SLES12 Security Update : zsh (SUSE-SU-2022:0733-1)	Nessus	SuSE Local Security Checks	high
158611	SUSE SLED15 / SLES15 Security Update : zsh (SUSE-SU-2022:0735-1)	Nessus	SuSE Local Security Checks	high
158605	SUSE SLES15 Security Update : zsh (SUSE-SU-2022:0732-1)	Nessus	SuSE Local Security Checks	high
158590	Amazon Linux 2 : zsh (ALAS-2022-1757)	Nessus	Amazon Linux Local Security Checks	high
158170	Debian DLA-2926-1 : zsh - LTS security update	Nessus	Debian Local Security Checks	high
158109	Debian DSA-5078-1 : zsh - security update	Nessus	Debian Local Security Checks	high
157935	FreeBSD : zsh -- Arbitrary command execution vulnerability (d923fb0c-8c2f-11ec-aa85-0800270512f4)	Nessus	FreeBSD Local Security Checks	high

Detections

Analytics

CVE-2021-45444

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Tenable Plugins

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