exiv2: CVE-2021-29473

Debian Bug report logs - #987736
exiv2: CVE-2021-29473

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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-2021-29473

Date: Wed, 28 Apr 2021 21:18:22 +0200

Source: exiv2
Version: 0.27.3-3
Severity: important
Tags: security upstream
Forwarded: https://github.com/Exiv2/exiv2/pull/1587
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for exiv2.

CVE-2021-29473[0]:
| 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.


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-2021-29473
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29473
[1] https://github.com/Exiv2/exiv2/security/advisories/GHSA-7569-phvm-vwc2
[2] https://github.com/Exiv2/exiv2/pull/1587

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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