The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites. This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL 1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v).

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7018-1 advisory.

    Robert Merget, Marcus Brinkmann, Nimrod Aviram, and Juraj Somorovsky discovered that certain Diffie-     Hellman ciphersuites in the TLS specification and implemented by OpenSSL contained a flaw. A remote     attacker could possibly use this issue to eavesdrop on encrypted communications. This was fixed in this     update by removing the insecure ciphersuites from OpenSSL. (CVE-2020-1968)

    Paul Kehrer discovered that OpenSSL incorrectly handled certain input lengths in EVP functions. A remote     attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service.
    (CVE-2021-23840)

    Elison Niven discovered that OpenSSL incorrectly handled the c_rehash script. A local attacker could     possibly use this issue to execute arbitrary commands when c_rehash is run. (CVE-2022-1292)

    Chancen and Daniel Fiala discovered that OpenSSL incorrectly handled the c_rehash script. A local attacker     could possibly use this issue to execute arbitrary commands when c_rehash is run. (CVE-2022-2068)

    It was discovered that OpenSSL incorrectly handled excessively large Diffie-Hellman parameters. An     attacker could possibly use this issue to cause a denial of service. (CVE-2023-3446)

    Bahaa Naamneh discovered that OpenSSL incorrectly handled certain malformed PKCS12 files. A remote     attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service.
    (CVE-2024-0727)

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 Redhat Enterprise Linux 8 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - openssl: Read buffer overruns processing ASN.1 strings (CVE-2021-3712)

  - Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to     timing attacks via a side-channel timing attack on 'port contention'. (CVE-2018-5407)

  - Normally in OpenSSL EC groups always have a co-factor present and this is used in side channel resistant     code paths. However, in some cases, it is possible to construct a group using explicit parameters (instead     of using a named curve). In those cases it is possible that such a group does not have the cofactor     present. This can occur even where all the parameters match a known named curve. If such a curve is used     then OpenSSL falls back to non-side channel resistant code paths which may result in full key recovery     during an ECDSA signature operation. In order to be vulnerable an attacker would have to have the ability     to time the creation of a large number of signatures where explicit parameters with no co-factor present     are in use by an application using libcrypto. For the avoidance of doubt libssl is not vulnerable because     explicit parameters are never used. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL     1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s). (CVE-2019-1547)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - openssl: doapr_outch function does not verify that certain memory allocation succeeds (CVE-2016-2842)

  - The dtls1_get_message_fragment function in d1_both.c in OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and     1.0.1 before 1.0.1h allows remote attackers to cause a denial of service (recursion and client crash) via     a DTLS hello message in an invalid DTLS handshake. (CVE-2014-0221)

  - The OBJ_obj2txt function in crypto/objects/obj_dat.c in OpenSSL 0.9.8 before 0.9.8zb, 1.0.0 before 1.0.0n,     and 1.0.1 before 1.0.1i, when pretty printing is used, does not ensure the presence of '\0' characters,     which allows context-dependent attackers to obtain sensitive information from process stack memory by     reading output from X509_name_oneline, X509_name_print_ex, and unspecified other functions.
    (CVE-2014-3508)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

This plugin has been deprecated as it does not adhere to established standards for this style of check.

The version of Junos OS installed on the remote host is affected by multiple vulnerabilities as referenced in the JSA69715 advisory.

  - The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to     compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In     such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent     over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across     multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites.
    This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL     1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v). (CVE-2020-1968)

  - The X.509 GeneralName type is a generic type for representing different types of names. One of those name     types is known as EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which compares different     instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both     GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a     possible denial of service attack. OpenSSL itself uses the GENERAL_NAME_cmp function for two purposes: 1)     Comparing CRL distribution point names between an available CRL and a CRL distribution point embedded in     an X509 certificate 2) When verifying that a timestamp response token signer matches the timestamp     authority name (exposed via the API functions TS_RESP_verify_response and TS_RESP_verify_token) If an     attacker can control both items being compared then that attacker could trigger a crash. For example if     the attacker can trick a client or server into checking a malicious certificate against a malicious CRL     then this may occur. Note that some applications automatically download CRLs based on a URL embedded in a     certificate. This checking happens prior to the signatures on the certificate and CRL being verified.
    OpenSSL's s_server, s_client and verify tools have support for the -crl_download option which implements     automatic CRL downloading and this attack has been demonstrated to work against those tools. Note that an     unrelated bug means that affected versions of OpenSSL cannot parse or construct correct encodings of     EDIPARTYNAME. However it is possible to construct a malformed EDIPARTYNAME that OpenSSL's parser will     accept and hence trigger this attack. All OpenSSL 1.1.1 and 1.0.2 versions are affected by this issue.
    Other OpenSSL releases are out of support and have not been checked. Fixed in OpenSSL 1.1.1i (Affected     1.1.1-1.1.1h). Fixed in OpenSSL 1.0.2x (Affected 1.0.2-1.0.2w). (CVE-2020-1971)

  - ASN.1 strings are represented internally within OpenSSL as an ASN1_STRING structure which contains a     buffer holding the string data and a field holding the buffer length. This contrasts with normal C strings     which are repesented as a buffer for the string data which is terminated with a NUL (0) byte. Although not     a strict requirement, ASN.1 strings that are parsed using OpenSSL's own d2i functions (and other similar     parsing functions) as well as any string whose value has been set with the ASN1_STRING_set() function will     additionally NUL terminate the byte array in the ASN1_STRING structure. However, it is possible for     applications to directly construct valid ASN1_STRING structures which do not NUL terminate the byte array     by directly setting the data and length fields in the ASN1_STRING array. This can also happen by using     the ASN1_STRING_set0() function. Numerous OpenSSL functions that print ASN.1 data have been found to     assume that the ASN1_STRING byte array will be NUL terminated, even though this is not guaranteed for     strings that have been directly constructed. Where an application requests an ASN.1 structure to be     printed, and where that ASN.1 structure contains ASN1_STRINGs that have been directly constructed by the     application without NUL terminating the data field, then a read buffer overrun can occur. The same thing     can also occur during name constraints processing of certificates (for example if a certificate has been     directly constructed by the application instead of loading it via the OpenSSL parsing functions, and the     certificate contains non NUL terminated ASN1_STRING structures). It can also occur in the     X509_get1_email(), X509_REQ_get1_email() and X509_get1_ocsp() functions. If a malicious actor can cause an     application to directly construct an ASN1_STRING and then process it through one of the affected OpenSSL     functions then this issue could be hit. This might result in a crash (causing a Denial of Service attack).
    It could also result in the disclosure of private memory contents (such as private keys, or sensitive     plaintext). Fixed in OpenSSL 1.1.1l (Affected 1.1.1-1.1.1k). Fixed in OpenSSL 1.0.2za (Affected     1.0.2-1.0.2y). (CVE-2021-3712)

  - OpenSSL 1.0.2 supports SSLv2. If a client attempts to negotiate SSLv2 with a server that is configured to     support both SSLv2 and more recent SSL and TLS versions then a check is made for a version rollback attack     when unpadding an RSA signature. Clients that support SSL or TLS versions greater than SSLv2 are supposed     to use a special form of padding. A server that supports greater than SSLv2 is supposed to reject     connection attempts from a client where this special form of padding is present, because this indicates     that a version rollback has occurred (i.e. both client and server support greater than SSLv2, and yet this     is the version that is being requested). The implementation of this padding check inverted the logic so     that the connection attempt is accepted if the padding is present, and rejected if it is absent. This     means that such as server will accept a connection if a version rollback attack has occurred. Further the     server will erroneously reject a connection if a normal SSLv2 connection attempt is made. Only OpenSSL     1.0.2 servers from version 1.0.2s to 1.0.2x are affected by this issue. In order to be vulnerable a 1.0.2     server must: 1) have configured SSLv2 support at compile time (this is off by default), 2) have configured     SSLv2 support at runtime (this is off by default), 3) have configured SSLv2 ciphersuites (these are not in     the default ciphersuite list) OpenSSL 1.1.1 does not have SSLv2 support and therefore is not vulnerable to     this issue. The underlying error is in the implementation of the RSA_padding_check_SSLv23() function. This     also affects the RSA_SSLV23_PADDING padding mode used by various other functions. Although 1.1.1 does not     support SSLv2 the RSA_padding_check_SSLv23() function still exists, as does the RSA_SSLV23_PADDING padding     mode. Applications that directly call that function or use that padding mode will encounter this issue.
    However since there is no support for the SSLv2 protocol in 1.1.1 this is considered a bug and not a     security issue in that version. OpenSSL 1.0.2 is out of support and no longer receiving public updates.
    Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j.
    Fixed in OpenSSL 1.0.2y (Affected 1.0.2s-1.0.2x). (CVE-2021-23839)

  - Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument     in some cases where the input length is close to the maximum permissable length for an integer on the     platform. In such cases the return value from the function call will be 1 (indicating success), but the     output length value will be negative. This could cause applications to behave incorrectly or crash.
    OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to     OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out     of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should     upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i).
    Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x). (CVE-2021-23840)

  - The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based     on the issuer and serial number data contained within an X509 certificate. However it fails to correctly     handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is     maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a     potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by     OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on     certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are     affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x     and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving     public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should     upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected     1.0.2-1.0.2x). (CVE-2021-23841)

Note: Nessus found J-Web enabled [set system services web-management http(s)] on this device.

The remote host is affected by the vulnerability described in GLSA-202210-02 (OpenSSL: Multiple Vulnerabilities)

  - The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to     compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In     such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent     over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across     multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites.
    This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL     1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v). (CVE-2020-1968)

  - In order to decrypt SM2 encrypted data an application is expected to call the API function     EVP_PKEY_decrypt(). Typically an application will call this function twice. The first time, on entry, the     out parameter can be NULL and, on exit, the outlen parameter is populated with the buffer size     required to hold the decrypted plaintext. The application can then allocate a sufficiently sized buffer     and call EVP_PKEY_decrypt() again, but this time passing a non-NULL value for the out parameter. A bug     in the implementation of the SM2 decryption code means that the calculation of the buffer size required to     hold the plaintext returned by the first call to EVP_PKEY_decrypt() can be smaller than the actual size     required by the second call. This can lead to a buffer overflow when EVP_PKEY_decrypt() is called by the     application a second time with a buffer that is too small. A malicious attacker who is able present SM2     content for decryption to an application could cause attacker chosen data to overflow the buffer by up to     a maximum of 62 bytes altering the contents of other data held after the buffer, possibly changing     application behaviour or causing the application to crash. The location of the buffer is application     dependent but is typically heap allocated. Fixed in OpenSSL 1.1.1l (Affected 1.1.1-1.1.1k).
    (CVE-2021-3711)

  - ASN.1 strings are represented internally within OpenSSL as an ASN1_STRING structure which contains a     buffer holding the string data and a field holding the buffer length. This contrasts with normal C strings     which are repesented as a buffer for the string data which is terminated with a NUL (0) byte. Although not     a strict requirement, ASN.1 strings that are parsed using OpenSSL's own d2i functions (and other similar     parsing functions) as well as any string whose value has been set with the ASN1_STRING_set() function will     additionally NUL terminate the byte array in the ASN1_STRING structure. However, it is possible for     applications to directly construct valid ASN1_STRING structures which do not NUL terminate the byte array     by directly setting the data and length fields in the ASN1_STRING array. This can also happen by using     the ASN1_STRING_set0() function. Numerous OpenSSL functions that print ASN.1 data have been found to     assume that the ASN1_STRING byte array will be NUL terminated, even though this is not guaranteed for     strings that have been directly constructed. Where an application requests an ASN.1 structure to be     printed, and where that ASN.1 structure contains ASN1_STRINGs that have been directly constructed by the     application without NUL terminating the data field, then a read buffer overrun can occur. The same thing     can also occur during name constraints processing of certificates (for example if a certificate has been     directly constructed by the application instead of loading it via the OpenSSL parsing functions, and the     certificate contains non NUL terminated ASN1_STRING structures). It can also occur in the     X509_get1_email(), X509_REQ_get1_email() and X509_get1_ocsp() functions. If a malicious actor can cause an     application to directly construct an ASN1_STRING and then process it through one of the affected OpenSSL     functions then this issue could be hit. This might result in a crash (causing a Denial of Service attack).
    It could also result in the disclosure of private memory contents (such as private keys, or sensitive     plaintext). Fixed in OpenSSL 1.1.1l (Affected 1.1.1-1.1.1k). Fixed in OpenSSL 1.0.2za (Affected     1.0.2-1.0.2y). (CVE-2021-3712)

  - There is a carry propagation bug in the MIPS32 and MIPS64 squaring procedure. Many EC algorithms are     affected, including some of the TLS 1.3 default curves. Impact was not analyzed in detail, because the     pre-requisites for attack are considered unlikely and include reusing private keys. Analysis suggests that     attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not     believed likely. Attacks against DH are considered just feasible (although very difficult) because most of     the work necessary to deduce information about a private key may be performed offline. The amount of     resources required for such an attack would be significant. However, for an attack on TLS to be     meaningful, the server would have to share the DH private key among multiple clients, which is no longer     an option since CVE-2016-0701. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0.0. It was     addressed in the releases of 1.1.1m and 3.0.1 on the 15th of December 2021. For the 1.0.2 release it is     addressed in git commit 6fc1aaaf3 that is available to premium support customers only. It will be made     available in 1.0.2zc when it is released. The issue only affects OpenSSL on MIPS platforms. Fixed in     OpenSSL 3.0.1 (Affected 3.0.0). Fixed in OpenSSL 1.1.1m (Affected 1.1.1-1.1.1l). Fixed in OpenSSL 1.0.2zc-     dev (Affected 1.0.2-1.0.2zb). (CVE-2021-4160)

  - 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)

  - The c_rehash script does not properly sanitise shell metacharacters to prevent command injection. This     script is distributed by some operating systems in a manner where it is automatically executed. On such     operating systems, an attacker could execute arbitrary commands with the privileges of the script. Use of     the c_rehash script is considered obsolete and should be replaced by the OpenSSL rehash command line tool.
    Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2). Fixed in OpenSSL 1.1.1o (Affected 1.1.1-1.1.1n).
    Fixed in OpenSSL 1.0.2ze (Affected 1.0.2-1.0.2zd). (CVE-2022-1292)

  - The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the     memory occuppied by the removed hash table entries. This function is used when decoding certificates or     keys. If a long lived process periodically decodes certificates or keys its memory usage will expand     without bounds and the process might be terminated by the operating system causing a denial of service.
    Also traversing the empty hash table entries will take increasingly more time. Typically such long lived     processes might be TLS clients or TLS servers configured to accept client certificate authentication. The     function was added in the OpenSSL 3.0 version thus older releases are not affected by the issue. Fixed in     OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2). (CVE-2022-1473)

  - AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised implementation will not encrypt     the entirety of the data under some circumstances. This could reveal sixteen bytes of data that was     preexisting in the memory that wasn't written. In the special case of in place encryption, sixteen bytes     of the plaintext would be revealed. Since OpenSSL does not support OCB based cipher suites for TLS and     DTLS, they are both unaffected. Fixed in OpenSSL 3.0.5 (Affected 3.0.0-3.0.4). Fixed in OpenSSL 1.1.1q     (Affected 1.1.1-1.1.1p). (CVE-2022-2097)

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 F5 Networks BIG-IP installed on the remote host is prior to 17.0.0. It is, therefore, affected by a vulnerability as referenced in the K92451315 advisory.

  - The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to     compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In     such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent     over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across     multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites.
    This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL     1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v). (CVE-2020-1968)

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 Palo Alto Networks PAN-OS running on the remote host is 8.1.x prior to 8.1.0 or 9.0.x prior to 9.0.0 or 9.1.x prior to 9.1.0. It is, therefore, affected by a vulnerability.

  - In versions of Palo Alto Networks PAN-OS software earlier than PAN-OS 10.0, the DHE cipher available for     use in traffic decryption improperly shares a cryptographic secret across multiple TLS connections, which     weakens its cryptographic strength. This is a prerequisite for successful exploitation of the Raccoon     attack (CVE-2020-1968), which allows an attacker to eavesdrop on encrypted traffic over those TLS     connections. (CVE-2020-1968)

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 SLES11 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2020:14491-1 advisory.

  - The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to     compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In     such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent     over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across     multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites.
    This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL     1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v). (CVE-2020-1968)

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 SLES11 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2020:14511-1 advisory.

  - The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to     compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In     such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent     over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across     multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites.
    This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL     1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v). (CVE-2020-1968)

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 version of the compat-openssl10 package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability :

  - The Raccoon attack exploits a flaw in the TLS     specification which can lead to an attacker being able     to compute the pre-master secret in connections which     have used a Diffie-Hellman (DH) based ciphersuite. In     such a case this would result in the attacker being     able to eavesdrop on all encrypted communications sent     over that TLS connection. The attack can only be     exploited if an implementation re-uses a DH secret     across multiple TLS connections. Note that this issue     only impacts DH ciphersuites and not ECDH ciphersuites.
    This issue affects OpenSSL 1.0.2 which is out of     support and no longer receiving public updates. OpenSSL     1.1.1 is not vulnerable to this issue. Fixed in OpenSSL     1.0.2w (Affected 1.0.2-1.0.2v).(CVE-2020-1968)

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 version of OpenSSL installed on the remote host is prior to 1.0.2w. It is, therefore, affected by a vulnerability as referenced in the 1.0.2w advisory.

  - The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to     compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In     such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent     over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across     multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites.
    This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL     1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v). (CVE-2020-1968)

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

This update for compat-openssl098 fixes the following issues :

CVE-2020-1968: Introduced hardening against the Raccoon attack by always generating fresh DH keys and never reuse them across multiple TLS connections (bsc#1176331).

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

Robert Merget, Marcus Brinkmann, Nimrod Aviram, and Juraj Somorovsky discovered that certain Diffie-Hellman ciphersuites in the TLS specification and implemented by OpenSSL contained a flaw. A remote attacker could possibly use this issue to eavesdrop on encrypted communications. This was fixed in this update by disabling the insecure ciphersuites.

For Debian 9 stretch, this problem has been fixed in version 1.0.2u-1~deb9u2.

We recommend that you upgrade your openssl1.0 packages.

For the detailed security status of openssl1.0 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/openssl1.0

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

An update of the openssl package has been released.

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4504-1 advisory.

    Robert Merget, Marcus Brinkmann, Nimrod Aviram, and Juraj Somorovsky discovered that certain Diffie-     Hellman ciphersuites in the TLS specification and implemented by OpenSSL contained a flaw. A remote     attacker could possibly use this issue to eavesdrop on encrypted communications. This was fixed in this     update by removing the insecure ciphersuites from OpenSSL. (CVE-2020-1968)

    Cesar Pereida Garca, Sohaib ul Hassan, Nicola Tuveri, Iaroslav Gridin, Alejandro Cabrera Aldaya, and     Billy Brumley discovered that OpenSSL incorrectly handled ECDSA signatures. An attacker could possibly use     this issue to perform a timing side-channel attack and recover private ECDSA keys. This issue only     affected Ubuntu 18.04 LTS. (CVE-2019-1547)

    Guido Vranken discovered that OpenSSL incorrectly performed the x86_64 Montgomery squaring procedure.
    While unlikely, a remote attacker could possibly use this issue to recover private keys. This issue only     affected Ubuntu 18.04 LTS. (CVE-2019-1551)

    Bernd Edlinger discovered that OpenSSL incorrectly handled certain decryption functions. In certain     scenarios, a remote attacker could possibly use this issue to perform a padding oracle attack and decrypt     traffic. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-1563)

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.

ID	Name	Product	Family	Severity
207374	Ubuntu 14.04 LTS : OpenSSL vulnerabilities (USN-7018-1)	Nessus	Ubuntu Local Security Checks	critical
199379	RHEL 8 : openssl (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
199286	RHEL 7 : openssl (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
195570	RHEL 5 : openssl (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	critical
195497	RHEL 6 : openssl (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	critical
166767	Juniper Junos OS Multiple Vulnerabilities (JSA69715)	Nessus	Junos Local Security Checks	high
166162	GLSA-202210-02 : OpenSSL: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	critical
163235	F5 Networks BIG-IP : OpenSSL vulnerability (K92451315)	Nessus	F5 Networks Local Security Checks	low
155598	Palo Alto Networks PAN-OS 8.1.x < 8.1.0 / 9.0.x < 9.0.0 / 9.1.x < 9.1.0 Vulnerability	Nessus	Palo Alto Local Security Checks	low
150629	SUSE SLES11 Security Update : openssl (SUSE-SU-2020:14491-1)	Nessus	SuSE Local Security Checks	low
150531	SUSE SLES11 Security Update : openssl1 (SUSE-SU-2020:14511-1)	Nessus	SuSE Local Security Checks	low
147059	EulerOS Virtualization for ARM 64 3.0.6.0 : compat-openssl10 (EulerOS-SA-2021-1554)	Nessus	Huawei Local Security Checks	low
146374	OpenSSL 1.0.2 < 1.0.2w Vulnerability	Nessus	Web Servers	low
143872	SUSE SLES12 Security Update : compat-openssl098 (SUSE-SU-2020:2634-1)	Nessus	SuSE Local Security Checks	low
140804	Debian DLA-2378-1 : openssl1.0 security update	Nessus	Debian Local Security Checks	low
140711	Photon OS 1.0: Openssl PHSA-2020-1.0-0324	Nessus	PhotonOS Local Security Checks	low
140704	Photon OS 2.0: Openssl PHSA-2020-2.0-0284	Nessus	PhotonOS Local Security Checks	low
140703	Photon OS 3.0: Openssl PHSA-2020-3.0-0141	Nessus	PhotonOS Local Security Checks	low
140645	Ubuntu 16.04 LTS / 18.04 LTS : OpenSSL vulnerabilities (USN-4504-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

Analytics

CVE-2020-1968

low

Tenable Plugins

critical

high

critical

critical

critical

high

critical

low

low

low

low

low

low

low

low

low

low

low

medium