Vulnerability Details : CVE-2021-20193
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.
Products affected by CVE-2021-20193
- cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-20193
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-20193
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST | |
|
3.3
|
LOW | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
1.8
|
1.4
|
NIST | 2024-10-24 |
CWE ids for CVE-2021-20193
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
-
The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2021-20193
-
https://security.gentoo.org/glsa/202105-29
Tar: Denial of service (GLSA 202105-29) — Gentoo securityThird Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1917565
1917565 – (CVE-2021-20193) CVE-2021-20193 tar: Memory leak in read_header() in list.cIssue Tracking;Patch;Third Party Advisory
-
https://savannah.gnu.org/bugs/?59897
GNU tar - Bugs: bug #59897, Memory Leak GNU Tar 1.33 [Savannah]Issue Tracking;Patch;Vendor Advisory
-
https://git.savannah.gnu.org/cgit/tar.git/commit/?id=d9d4435692150fa8ff68e1b1a473d187cc3fd777
tar.git - GNU TarMailing List;Patch;Third Party Advisory
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