Vulnerability Details : CVE-2018-6540
In ZZIPlib 0.13.67, there is a bus error caused by loading of a misaligned address in the zzip_disk_findfirst function of zzip/mmapped.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2018-6540
Probability of exploitation activity in the next 30 days: 0.39%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 70 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2018-6540
| 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 |
|
6.5
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
References for CVE-2018-6540
-
https://usn.ubuntu.com/3699-1/
USN-3699-1: zziplib vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://github.com/gdraheim/zziplib/issues/15
Bus error in zzip_disk_findfirst (src/zzip/mmapped.c) [CVE-2018-6540] · Issue #15 · gdraheim/zziplib · GitHubExploit;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2020/06/msg00029.html
[SECURITY] [DLA 2258-1] zziplib security update
Products affected by CVE-2018-6540
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
- cpe:2.3:a:zziplib_project:zziplib:0.13.67:*:*:*:*:*:*:*