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Vulnerability · Published Aug 9, 2021 · Assigned by GitHub_M

CVE-2021-34334Denial of service due to integer overflow in loop counter

Medium 5.5

In plain English

A medium-severity infinite loop 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)5.5Medium
Exploit odds (30 days)1.1%top 33.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An infinite loop is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.5.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20exiv20.27.5-r0ALPINE-CVE-2021-34334
Alpine:v3.21exiv20.27.5-r0ALPINE-CVE-2021-34334
Alpine:v3.22exiv20.27.5-r0ALPINE-CVE-2021-34334
Alpine:v3.23exiv20.27.5-r0ALPINE-CVE-2021-34334
Alpine:v3.24exiv20.27.5-r0ALPINE-CVE-2021-34334
Debian:12exiv20.27.5-1DEBIAN-CVE-2021-34334
Debian:13exiv20.27.5-1DEBIAN-CVE-2021-34334
Debian:14exiv20.27.5-1DEBIAN-CVE-2021-34334
Ubuntu:22.04:LTSexiv20.27.3-3ubuntu4UBUNTU-CVE-2021-34334

Affected products (as reported)

VendorProductVersions
Exiv2 exiv2 <= 0.27.4

Weakness: CWE-835 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References