Double Free in Libgd
CVE-2021-40145
gdImageGd2Ptr in gd_gd2.c in the GD Graphics Library (aka LibGD) through 2.3.2 has a double free. NOTE: the vendor's position is "The GD2 image format is a proprietary image format of libgd. It has to be regarded as being obsolete, and should only be used for development and testing purposes.
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.021 (80.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/libgd/libgd/commit/c5fd25ce0e48fd5618a972ca9f5e28d6d62006af (Patch, Third Party Advisory)
- github.com/libgd/libgd/pull/713 (Third Party Advisory, Issue Tracking)
- github.com/libgd/libgd/issues/700 (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2021-40145?
- CVE-2021-40145 is a high-severity vulnerability in Libgd, classified under Double Free. CVSS score: 7.5/10. Published 2021-08-26.
- How severe is CVE-2021-40145?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-40145 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.