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CVE-2021-20193

Date: March 26, 2021

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.

Language: C

Severity Score

Related Resources (11)

https://nvd.nist.gov/vuln/detail/CVE-2021-20193
https://security.gentoo.org/glsa/202105-29
https://access.redhat.com/security/cve/CVE-2021-20193
https://security.archlinux.org/CVE-2021-20193
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-20193
https://savannah.gnu.org/bugs/?59897
https://security.alpinelinux.org/vuln/CVE-2021-20193
https://bugzilla.redhat.com/show_bug.cgi?id=1917565
https://git.savannah.gnu.org/cgit/tar.git/commit/?id=d9d4435692150fa8ff68e1b1a473d187cc3fd777
https://security-tracker.debian.org/tracker/CVE-2021-20193
https://www.mend.io/vulnerability-database/CVE-2021-20193

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

Missing Release of Memory after Effective Lifetime

CWE-401

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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