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Vulnerability · Published May 13, 2021 · Assigned by GitHub_M

CVE-2021-29623Uninitialized variable bug in Exiv2

Low 3.6

In plain English

A low-severity security flaw in exiv2 from Exiv2. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.6Low
Exploit odds (30 days)1.1%top 34.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A read of uninitialized memory 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 read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack memory, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8exiv20.27.4-5.el8ALSA-2021:4173
AlmaLinux:8exiv2-devel0.27.4-5.el8ALSA-2021:4173
AlmaLinux:8exiv2-doc0.27.4-5.el8ALSA-2021:4173
AlmaLinux:8exiv2-libs0.27.4-5.el8ALSA-2021:4173
Alpine:v3.20exiv20.27.3-r2ALPINE-CVE-2021-29623
Alpine:v3.21exiv20.27.3-r2ALPINE-CVE-2021-29623
Alpine:v3.22exiv20.27.3-r2ALPINE-CVE-2021-29623
Alpine:v3.23exiv20.27.3-r2ALPINE-CVE-2021-29623
Alpine:v3.24exiv20.27.3-r2ALPINE-CVE-2021-29623
Debian:12exiv20.27.5-1DEBIAN-CVE-2021-29623
Debian:13exiv20.27.5-1DEBIAN-CVE-2021-29623
Debian:14exiv20.27.5-1DEBIAN-CVE-2021-29623
Rocky Linux:8exiv20:0.27.4-5.el8RLSA-2021:4173

Affected products (as reported)

VendorProductVersions
Exiv2 exiv2 < v0.27.4

Weakness: CWE-908 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

References