A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability.

An update of the tar package has been released.

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

  - A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a     crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this     vulnerability is to system availability. (CVE-2021-20193)

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 SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:1548-1 advisory.

  - GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows     local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by     modifying a file that is supposed to be archived by a different user's process (e.g., a system backup     running as root). (CVE-2018-20482)

  - pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain     archives that have malformed extended headers. (CVE-2019-9923)

  - A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a     crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this     vulnerability is to system availability. (CVE-2021-20193)

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 host has packages installed that are affected by a vulnerability as referenced in the USN-5329-1 advisory.

    It was discovered that tar incorrectly handled certain files. An attacker could possibly use this issue to     cause tar to crash, resulting in a denial of service.

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.

The remote host is affected by the vulnerability described in GLSA-202105-29 (Tar: Denial of service)

    It was discovered that GNU Tar had a memory leak when processing archive       headers.
  Impact :

    A remote attacker could entice a user to open a specially crafted       archive using Tar, possibly resulting in a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

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

  - A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a     crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this     vulnerability is to system availability. (CVE-2021-20193)

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.

According to the version of the tar package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - A flaw was found in the src/list.c of tar. This flaw     allows an attacker who can submit a crafted input file     to tar to cause uncontrolled consumption of memory. The     highest threat from this vulnerability is to system     availability.(CVE-2021-20193)

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.

According to the version of the tar package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability :

  - A flaw was found in the src/list.c of tar 1.33 and     earlier. This flaw allows an attacker who can submit a     crafted input file to tar to cause uncontrolled     consumption of memory. The highest threat from this     vulnerability is to system     availability.(CVE-2021-20193)

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.

According to the version of the tar package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

  - A flaw was found in the src/list.c of tar. This flaw     allows an attacker who can submit a crafted input file     to tar to cause uncontrolled consumption of memory. The     highest threat from this vulnerability is to system     availability.(CVE-2021-20193)

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.

According to the version of the tar package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - A flaw was found in the src/list.c of tar 1.33 and     earlier. This flaw allows an attacker who can submit a     crafted input file to tar to cause uncontrolled     consumption of memory. The highest threat from this     vulnerability is to system     availability.(CVE-2021-20193)

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.

This update for tar fixes the following issues :

CVE-2021-20193: Memory leak in read_header() in list.c (bsc#1181131)

This update was imported from the SUSE:SLE-15:Update update project.

This update for tar fixes the following issues :

  - CVE-2021-20193: Memory leak in read_header() in list.c     (bsc#1181131)

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.

ID	Name	Product	Family	Severity
203232	Photon OS 4.0: Tar PHSA-2021-4.0-0010	Nessus	PhotonOS Local Security Checks	low
170814	EulerOS Virtualization 3.0.2.2 : tar (EulerOS-SA-2023-1297)	Nessus	Huawei Local Security Checks	low
160664	SUSE SLED15 / SLES15 Security Update : tar (SUSE-SU-2022:1548-1)	Nessus	SuSE Local Security Checks	high
158932	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS : tar vulnerability (USN-5329-1)	Nessus	Ubuntu Local Security Checks	critical
157966	EulerOS Virtualization 3.0.6.0 : tar (EulerOS-SA-2022-1099)	Nessus	Huawei Local Security Checks	low
157036	GLSA-202105-29 : Tar: Denial of service	Nessus	Gentoo Local Security Checks	low
156535	EulerOS Virtualization 3.0.2.6 : tar (EulerOS-SA-2021-2861)	Nessus	Huawei Local Security Checks	low
155523	EulerOS Virtualization 2.9.0 : tar (EulerOS-SA-2021-2791)	Nessus	Huawei Local Security Checks	low
155513	EulerOS Virtualization 2.9.1 : tar (EulerOS-SA-2021-2760)	Nessus	Huawei Local Security Checks	low
153710	EulerOS 2.0 SP9 : tar (EulerOS-SA-2021-2543)	Nessus	Huawei Local Security Checks	low
153670	EulerOS 2.0 SP9 : tar (EulerOS-SA-2021-2567)	Nessus	Huawei Local Security Checks	low
153661	EulerOS 2.0 SP8 : tar (EulerOS-SA-2021-2488)	Nessus	Huawei Local Security Checks	low
153286	EulerOS 2.0 SP2 : tar (EulerOS-SA-2021-2434)	Nessus	Huawei Local Security Checks	low
151780	EulerOS 2.0 SP5 : tar (EulerOS-SA-2021-2232)	Nessus	Huawei Local Security Checks	low
151347	EulerOS Virtualization for ARM 64 3.0.2.0 : tar (EulerOS-SA-2021-2114)	Nessus	Huawei Local Security Checks	low
151223	EulerOS Virtualization 3.0.6.6 : tar (EulerOS-SA-2021-2036)	Nessus	Huawei Local Security Checks	low
150438	Photon OS 2.0: Tar PHSA-2021-2.0-0352	Nessus	PhotonOS Local Security Checks	low
150243	Photon OS 1.0: Tar PHSA-2021-1.0-0395	Nessus	PhotonOS Local Security Checks	low
149820	Photon OS 3.0: Tar PHSA-2021-3.0-0239	Nessus	PhotonOS Local Security Checks	low
149145	EulerOS 2.0 SP3 : tar (EulerOS-SA-2021-1854)	Nessus	Huawei Local Security Checks	low
148313	openSUSE Security Update : tar (openSUSE-2021-494)	Nessus	SuSE Local Security Checks	low
148237	SUSE SLED15 / SLES15 Security Update : tar (SUSE-SU-2021:0974-1)	Nessus	SuSE Local Security Checks	low
148233	SUSE SLES12 Security Update : tar (SUSE-SU-2021:0975-1)	Nessus	SuSE Local Security Checks	low

Detections

Analytics

CVE-2021-20193

critical

Tenable Plugins

low

low

high

critical

low

low

low

low

low

low

low

low

low

low

low

low

low

low

low

low

low

low

low