Heap-based buffer overflow in gnulib - CVE-2018-17942
Published: January 17, 2025
Vulnerability identifier: #VU102962
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2018-17942
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GNU
Affected software:
gnulib
gnulib
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the convert_to_decimal function in vasnprintf.c. A remote attacker can trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2018-17942
Install update from vendor's website.
Sources
- https://github.com/coreutils/gnulib/commit/278b4175c9d7dd47c1a3071554aac02add3b3c35
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A5UQRNQE6XHMD5UYYHAU3VQWAYHIPMQS/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TMGHTVYH3KAFN34QXNSGEQDSTV7MCOQW/
- https://lists.gnu.org/archive/html/bug-gnulib/2018-09/msg00107.html
- https://savannah.gnu.org/bugs/?func=detailitem&item_id=54686