Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2019.4770.2
cyrus-sasl2 security update
23 December 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: cyrus-sasl2
Publisher: Debian
Operating System: Debian GNU/Linux 8
Debian GNU/Linux 9
Debian GNU/Linux 10
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-19906
Original Bulletin:
https://lists.debian.org/debian-lts-announce/2019/12/msg00027.html
https://lists.debian.org/debian-security-announce/2019/msg00245.html
Comment: This bulletin contains two (2) Debian security advisories.
This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running cyrus-sasl2 check for an updated version of the software for
their operating system.
Revision History: December 23 2019: Include DSA 4591-1
December 23 2019: Initial Release
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Package : cyrus-sasl2
Version : 2.1.26.dfsg1-13+deb8u2
CVE ID : CVE-2019-19906
Debian Bug : 947043
There has been an out-of-bounds write in Cyrus SASL leading to
unauthenticated remote denial-of-service in OpenLDAP via a malformed LDAP
packet. The OpenLDAP crash was ultimately caused by an off-by-one error
in _sasl_add_string in common.c in cyrus-sasl.
For Debian 8 "Jessie", this problem has been fixed in version
2.1.26.dfsg1-13+deb8u2.
We recommend that you upgrade your cyrus-sasl2 packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
- --=20
mike gabriel aka sunweaver (Debian Developer)
fon: +49 (1520) 1976 148
GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22 0782 9AF4 6B30 2577 1B31
mail: sunweaver@debian.org, http://sunweavers.net
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Debian Security Advisory DSA-4591-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
December 20, 2019 https://www.debian.org/security/faq
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Package : cyrus-sasl2
CVE ID : CVE-2019-19906
Debian Bug : 947043
Stephan Zeisberg reported an out-of-bounds write vulnerability in the
_sasl_add_string() function in cyrus-sasl2, a library implementing the
Simple Authentication and Security Layer. A remote attacker can take
advantage of this issue to cause denial-of-service conditions for
applications using the library.
For the oldstable distribution (stretch), this problem has been fixed
in version 2.1.27~101-g0780600+dfsg-3+deb9u1.
For the stable distribution (buster), this problem has been fixed in
version 2.1.27+dfsg-1+deb10u1.
We recommend that you upgrade your cyrus-sasl2 packages.
For the detailed security status of cyrus-sasl2 please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/cyrus-sasl2
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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