Vulnerability Details : CVE-2017-14121
The DecodeNumber function in unrarlib.c in unrar 0.0.1 (aka unrar-free or unrar-gpl) suffers from a NULL pointer dereference flaw triggered by a crafted RAR archive. NOTE: this may be the same as one of the several test cases in the CVE-2017-11189 references.
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2017-14121
Probability of exploitation activity in the next 30 days: 0.14%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 48 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-14121
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
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 |
CWE ids for CVE-2017-14121
-
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-14121
-
http://www.openwall.com/lists/oss-security/2017/08/20/1
oss-security - unrar-free/unrar-gpl: directory traversal and other issuesMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/02/msg00026.html
[SECURITY] [DLA 2567-1] unrar-free security updateMailing List;Third Party Advisory
-
https://bugs.debian.org/874061
#874061 - unrar-free: CVE-2017-14121: null pointer dereference - Debian Bug report logsIssue Tracking;Third Party Advisory
Products affected by CVE-2017-14121
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:rarlab:unrar:0.0.1:*:*:*:*:*:*:*