A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file, leading to a crash or code execution.

The remote Ubuntu 24.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-7054-1 advisory.

    It was discovered that unzip did not properly handle unicode strings under certain circumstances. If a     user were tricked into opening a specially crafted zip file, an attacker could possibly use this issue to     cause unzip to crash, resulting in a denial of service, or possibly execute arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu 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 unzip package has been released.

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.

  - unzip: SIGSEGV during the conversion of an utf-8 string to a local string (CVE-2022-0530)

  - A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can     lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file,     leading to a crash or code execution. (CVE-2021-4217)

  - 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-2022-0529)

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.

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

  - A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can     lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file,     leading to a crash or code execution. (CVE-2021-4217)

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-029 advisory.

  - A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can     lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file,     leading to a crash or code execution. (CVE-2021-4217)

  - 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-2022-0529, CVE-2022-0530)

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 unzip installed on the remote host is prior to 6.0-57. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-1906 advisory.

  - A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can     lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file,     leading to a crash or code execution. (CVE-2021-4217)

  - 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-2022-0529, CVE-2022-0530)

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

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

  - A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can     lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file,     leading to a crash or code execution. (CVE-2021-4217)

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 unzip installed on the remote host is prior to 6.0-57. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2022-2022-221 advisory.

  - A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can     lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file,     leading to a crash or code execution. (CVE-2021-4217)

  - 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-2022-0529, CVE-2022-0530)

Note that Nessus has not tested for these issues 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 / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5673-1 advisory.

    It was discovered that unzip did not properly handle unicode strings under certain circumstances. If a     user were tricked into opening a specially crafted zip file, an attacker could possibly use this issue to     cause unzip to crash, resulting in a denial of service, or possibly execute arbitrary code.

    (CVE-2021-4217)

    It was discovered that unzip did not properly perform bounds checking while converting wide strings to     local strings. If a user were tricked into opening a specially crafted zip file, an attacker could     possibly use this issue to cause unzip to crash, resulting in a denial of service, or possibly execute     arbitrary code. (CVE-2022-0529, CVE-2022-0530)

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
208082	Ubuntu 24.04 LTS : unzip vulnerability (USN-7054-1)	Nessus	Ubuntu Local Security Checks	low
203629	Photon OS 5.0: Unzip PHSA-2023-5.0-0057	Nessus	PhotonOS Local Security Checks	high
199640	RHEL 8 : unzip (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	medium
196603	RHEL 6 : unzip (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	high
196547	RHEL 7 : unzip (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	high
177206	EulerOS Virtualization 3.0.6.0 : unzip (EulerOS-SA-2023-2216)	Nessus	Huawei Local Security Checks	low
173164	Amazon Linux 2023 : unzip (ALAS2023-2023-029)	Nessus	Amazon Linux Local Security Checks	medium
170441	Amazon Linux 2 : unzip (ALAS-2023-1906)	Nessus	Amazon Linux Local Security Checks	medium
169874	EulerOS Virtualization 2.9.0 : unzip (EulerOS-SA-2023-1237)	Nessus	Huawei Local Security Checks	low
169793	EulerOS Virtualization 2.9.1 : unzip (EulerOS-SA-2023-1207)	Nessus	Huawei Local Security Checks	low
169751	EulerOS Virtualization 2.10.0 : unzip (EulerOS-SA-2023-1178)	Nessus	Huawei Local Security Checks	low
169750	EulerOS Virtualization 2.10.1 : unzip (EulerOS-SA-2023-1157)	Nessus	Huawei Local Security Checks	low
168990	EulerOS 2.0 SP10 : unzip (EulerOS-SA-2022-2860)	Nessus	Huawei Local Security Checks	low
168988	EulerOS 2.0 SP10 : unzip (EulerOS-SA-2022-2834)	Nessus	Huawei Local Security Checks	low
168579	Amazon Linux 2022 : unzip (ALAS2022-2022-221)	Nessus	Amazon Linux Local Security Checks	medium
168504	EulerOS 2.0 SP8 : unzip (EulerOS-SA-2022-2809)	Nessus	Huawei Local Security Checks	low
167379	EulerOS 2.0 SP9 : unzip (EulerOS-SA-2022-2782)	Nessus	Huawei Local Security Checks	low
167376	EulerOS 2.0 SP9 : unzip (EulerOS-SA-2022-2747)	Nessus	Huawei Local Security Checks	low
166103	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS : unzip vulnerabilities (USN-5673-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

Analytics

CVE-2021-4217

low

Tenable Plugins

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