Cyrus SASL 2.1.23, 2.1.26, and earlier does not properly handle when a NULL value is returned upon an error by the crypt function as implemented in glibc 2.17 and later, which allows remote attackers to cause a denial of service (thread crash and consumption) via (1) an invalid salt or, when FIPS-140 is enabled, a (2) DES or (3) MD5 encrypted password, which triggers a NULL pointer dereference.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Cyrus-sasl | Cmu | * | 2.1.26 (including) |
| Cyrus-sasl | Cmu | 1.5.28 (including) | 1.5.28 (including) |
| Cyrus-sasl | Cmu | 2.1.19 (including) | 2.1.19 (including) |
| Cyrus-sasl | Cmu | 2.1.20 (including) | 2.1.20 (including) |
| Cyrus-sasl | Cmu | 2.1.21 (including) | 2.1.21 (including) |
| Cyrus-sasl | Cmu | 2.1.22 (including) | 2.1.22 (including) |
| Cyrus-sasl | Cmu | 2.1.23 (including) | 2.1.23 (including) |
| Cyrus-sasl | Cmu | 2.1.24 (including) | 2.1.24 (including) |
| Cyrus-sasl | Cmu | 2.1.25 (including) | 2.1.25 (including) |
| Cyrus-sasl2 | Ubuntu | devel | * |
| Cyrus-sasl2 | Ubuntu | raring | * |
| Cyrus-sasl2 | Ubuntu | upstream | * |
| Cyrus-sasl2 | Ubuntu | vivid | * |
| Cyrus-sasl2 | Ubuntu | vivid/stable-phone-overlay | * |
| Cyrus-sasl2 | Ubuntu | vivid/ubuntu-core | * |
References
- http://git.cyrusimap.org/cyrus-sasl/commit/?id=dedad73e5e7a75d01a5f3d5a6702ab8ccd2ff40d
- http://security.gentoo.org/glsa/glsa-201309-01.xml
- http://www.debian.org/security/2015/dsa-3368
- http://www.openwall.com/lists/oss-security/2013/07/12/3
- http://www.openwall.com/lists/oss-security/2013/07/12/6
- http://www.openwall.com/lists/oss-security/2013/07/13/1
- http://www.openwall.com/lists/oss-security/2013/07/15/1
- http://www.ubuntu.com/usn/USN-2755-1
- https://www.linuxquestions.org/questions/slackware-14/%5Bslackware-current%5D-glibc-2-17-shadow-and-other-penumbrae-4175461061/
- http://git.cyrusimap.org/cyrus-sasl/commit/?id=dedad73e5e7a75d01a5f3d5a6702ab8ccd2ff40d
- http://security.gentoo.org/glsa/glsa-201309-01.xml
- http://www.debian.org/security/2015/dsa-3368
- http://www.openwall.com/lists/oss-security/2013/07/12/3
- http://www.openwall.com/lists/oss-security/2013/07/12/6
- http://www.openwall.com/lists/oss-security/2013/07/13/1
- http://www.openwall.com/lists/oss-security/2013/07/15/1
- http://www.ubuntu.com/usn/USN-2755-1
- https://www.linuxquestions.org/questions/slackware-14/%5Bslackware-current%5D-glibc-2-17-shadow-and-other-penumbrae-4175461061/