Vulnerability Details : CVE-2020-16303
Potential exploit
A use-after-free vulnerability in xps_finish_image_path() in devices/vector/gdevxps.c of Artifex Software GhostScript v9.50 allows a remote attacker to escalate privileges via a crafted PDF file. This is fixed in v9.51.
Vulnerability category: Memory Corruption
Products affected by CVE-2020-16303
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
- cpe:2.3:a:artifex:ghostscript:9.50:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-16303
0.42%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 74 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-16303
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2020-16303
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-16303
-
https://usn.ubuntu.com/4469-1/
USN-4469-1: Ghostscript vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html
[SECURITY] [DLA 2335-1] ghostscript security updateMailing List;Third Party Advisory
-
https://bugs.ghostscript.com/show_bug.cgi?id=701818
701818 – heap-use-after-free at devices/vector/gdevxps.c:1431 in xps_finish_image_pathExploit;Issue Tracking;Vendor Advisory
-
https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=94d8955cb77
git.ghostscript.com Git - ghostpdl.git/commitdiffPatch;Vendor Advisory
-
https://security.gentoo.org/glsa/202008-20
GPL Ghostscript: Multiple vulnerabilities (GLSA 202008-20) — Gentoo securityThird Party Advisory
-
https://www.debian.org/security/2020/dsa-4748
Debian -- Security Information -- DSA-4748-1 ghostscriptThird Party Advisory
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