CVE-2021-37620 Out-of-bounds read in XmpTextValue::read()

What is CVE-2021-37620?

CVE-2021-37620 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 9 Aug 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An out-of-bounds read was found in Exiv2 versions v0.27.4 and earlier. The out-of-bounds read 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.

Weakness: CWE-125

Which versions are affected by CVE-2021-37620?

It affects 3 products.

Products include Debian Debian Linux, Exiv2 Exiv2, Fedoraproject Fedora.

How do I fix CVE-2021-37620?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2021-37620 being exploited?

There is no known exploitation of CVE-2021-37620 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-7222, CLEANSTART-2024-QX07706, DEBIAN-CVE-2021-37620, GHSA-v5g7-46xf-h728, JLSEC-2026-1310, UBUNTU-CVE-2021-37620 and 1 more.