Use After Free in Cairographics Cairo
CVE-2018-19876
cairo 1.16.0, in cairo_ft_apply_variations() in cairo-ft-font.c, would free memory using a free function incompatible with WebKit's fastMalloc, leading to an application crash with a "free(): invalid pointer" error.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.017 (76.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Cairographics Cairo — versions 1.16.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.webkit.org/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- gitlab.freedesktop.org/cairo/cairo/merge_requests/5 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-19876?
- CVE-2018-19876 is a medium-severity vulnerability in Cairographics Cairo, classified under Use After Free. CVSS score: 6.5/10. Published 2018-12-05.
- How severe is CVE-2018-19876?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2018-19876 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.