Out-of-bounds Read in Exiv2
CVE-2021-29473
Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `insert`. The bug is fixed in version v0.27.4. Please see our security policy for information about Exiv2 security.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.5 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.017 (76.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.0% 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
- Exiv2 — versions < 0.27.4
- Debian Linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 33, 34
Weakness classification (CWE)
References
- github.com/Exiv2/exiv2/security/advisories/GHSA-7569-phvm-vwc2 (Patch, Third Party Advisory)
- github.com/github/advisory-review/pull/1587 (Third Party Advisory, Broken Link)
- github.com/Exiv2/exiv2/security/policy (Third Party Advisory, Release Notes)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- www.debian.org/security/2021/dsa-4958 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/08/msg00028.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202312-06 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-29473?
- CVE-2021-29473 is a low-severity vulnerability in Exiv2, classified under Out-of-bounds Read. CVSS score: 2.5/10. Published 2021-04-26.
- How severe is CVE-2021-29473?
- Low severity. CVSS v3 base score is 2.5 out of 10.