Out-of-bounds Read in GNOME Libsoup
CVE-2019-17266
libsoup from versions 2.65.1 until 2.68.1 have a heap-based buffer over-read because soup_ntlm_parse_challenge() in soup-auth-ntlm.c does not properly check an NTLM message's length before proceeding with a memcpy.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.028 (86.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- GNOME Libsoup
- Canonical Ubuntu Linux — versions 18.04, 19.04
Weakness classification (CWE)
References
- gitlab.gnome.org/GNOME/libsoup/issues/173 (Third Party Advisory, Issue Tracking, Broken Link)
- security-tracker.debian.org/tracker/CVE-2019-17266 (Third Party Advisory)
- gitlab.gnome.org/GNOME/libsoup/commit/88b7dff4467f4151afae244ea7d1223753cd05ab (Third Party Advisory)
- github.com/Kirin-say/Vulnerabilities/blob/master/CVE-2019-17266_POC.md (Third Party Advisory)
- bugs.debian.org/cgi-bin/bugreport.cgi (Third Party Advisory)
- www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1705054.html
- gitlab.gnome.org/GNOME/libsoup/commit/f8a54ac85eec2008c85393f331cdd251af8266ad (Third Party Advisory)
- usn.ubuntu.com/4152-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-17266?
- CVE-2019-17266 is a critical-severity vulnerability in GNOME Libsoup, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2019-10-06.
- How severe is CVE-2019-17266?
- Critical severity. CVSS v3 base score is 9.8 out of 10.