exiv2: CVE-2021-29463

Debian Bug report logs - #988241
exiv2: CVE-2021-29463

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: exiv2: CVE-2021-29463

Date: Sat, 08 May 2021 16:03:22 +0200

Source: exiv2
Version: 0.27.3-3
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for exiv2.

CVE-2021-29463[0]:
| 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 v0.27.3 and earlier. 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2021-29463
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29463
[1] https://github.com/Exiv2/exiv2/security/advisories/GHSA-5p8g-9xf3-gfrr
[2] https://github.com/Exiv2/exiv2/commit/783b3a6ff15ed6f82a8f8e6c8a6f3b84a9b04d4b

Regards,
Salvatore

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