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Gentoo Linux Security Advisory                           GLSA 202212-07
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                                           https://security.gentoo.org/
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 Severity: High
    Title: libksba: Remote Code Execution
     Date: December 28, 2022
     Bugs: #877453
       ID: 202212-07

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Synopsis
=======
An integer overflow vulnerability has been found in libksba which could
result in remote code execution.

Background
=========
Libksba is a X.509 and CMS (PKCS#7) library.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-libs/libksba           < 1.6.3                      >= 1.6.3

Description
==========
An integer overflow in parsing ASN.1 objects could lead to a buffer
overflow.

Impact
=====
Crafted ASN.1 objects could trigger an integer overflow and buffer
overflow to result in remote code execution.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All libksba users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">Þv-libs/libksba-1.6.3"

References
=========
[ 1 ] CVE-2022-3515
      https://nvd.nist.gov/vuln/detail/CVE-2022-3515
[ 2 ] CVE-2022-47629
      https://nvd.nist.gov/vuln/detail/CVE-2022-47629

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202212-07

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
======
Copyright 2022 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5