Input validation error in Rsync - CVE-2014-2855
Published: April 23, 2014 / Updated: August 10, 2020
Vulnerability identifier: #VU41760
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2014-2855
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Samba
Affected software:
Rsync
Rsync
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The check_secret function in authenticate.c in rsync 3.1.0 and earlier allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a user name which does not exist in the secrets file.
How to mitigate CVE-2014-2855
Install update from vendor's website.
Sources
- http://advisories.mageia.org/MGASA-2015-0065.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-April/131910.html
- http://lists.opensuse.org/opensuse-updates/2014-05/msg00006.html
- http://secunia.com/advisories/57948
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:131
- http://www.openwall.com/lists/oss-security/2014/04/14/5
- http://www.openwall.com/lists/oss-security/2014/04/15/1
- http://www.ubuntu.com/usn/USN-2171-1
- https://bugs.launchpad.net/ubuntu/+source/rsync/+bug/1307230
- https://bugzilla.samba.org/show_bug.cgi?id=10551
- https://git.samba.org/?p=rsync.git;a=commit;h=0dedfbce2c1b851684ba658861fe9d620636c56a