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Debian Security Advisory 4955-1

Debian Security Advisory 4955-1
Posted Aug 28, 2021
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4955-1 - Philipp Jeitner and Haya Shulman discovered a stack-based buffer overflow in libspf2, a library for validating mail senders with SPF, which could result in denial of service, or potentially execution of arbitrary code when processing a specially crafted SPF record.

tags | advisory, denial of service, overflow, arbitrary
systems | linux, debian
advisories | CVE-2021-20314
SHA-256 | 6564d32f37928be06a9316fcdbbad6ae35a20a9b97b6589dd788e5a94c66328e

Debian Security Advisory 4955-1

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

- -------------------------------------------------------------------------
Debian Security Advisory DSA-4955-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
August 11, 2021 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : libspf2
CVE ID : CVE-2021-20314

Philipp Jeitner and Haya Shulman discovered a stack-based buffer
overflow in libspf2, a library for validating mail senders with SPF,
which could result in denial of service, or potentially execution of
arbitrary code when processing a specially crafted SPF record.

For the stable distribution (buster), this problem has been fixed in
version 1.2.10-7.1~deb10u1.

We recommend that you upgrade your libspf2 packages.

For the detailed security status of libspf2 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/libspf2

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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