NULL pointer dereference in Libexif Project Exif
CVE-2021-27815
NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.013 (68.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Libexif Project Exif
- Fedoraproject Fedora — versions 32, 33, 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/libexif/exif/issues/4 (Exploit, Third Party Advisory)
- github.com/libexif/exif/commit/f6334d9d32437ef13dc902f0a88a2be0063d9d1c (Patch, Third Party Advisory)
- github.com/libexif/exif/commit/eb84b0e3c5f2a86013b6fcfb800d187896a648fa (Patch, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202210-28 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27815?
- CVE-2021-27815 is a medium-severity vulnerability in Libexif Project Exif, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2021-04-14.
- How severe is CVE-2021-27815?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-27815 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.