Buffer overflow in Kerberos 5 - CVE-2015-8629
Published: February 13, 2016 / Updated: July 28, 2020
Vulnerability identifier: #VU32305
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2015-8629
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MIT
Affected software:
Kerberos 5
Kerberos 5
Detailed vulnerability description
The vulnerability allows a remote authenticated user to gain access to sensitive information.
The xdr_nullstring function in lib/kadm5/kadm_rpc_xdr.c in kadmind in MIT Kerberos 5 (aka krb5) before 1.13.4 and 1.14.x before 1.14.1 does not verify whether ' ' characters exist as expected, which allows remote authenticated users to obtain sensitive information or cause a denial of service (out-of-bounds read) via a crafted string.
How to mitigate CVE-2015-8629
Install update from vendor's website.
Sources
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8341
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00059.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00110.html
- http://rhn.redhat.com/errata/RHSA-2016-0493.html
- http://rhn.redhat.com/errata/RHSA-2016-0532.html
- http://www.debian.org/security/2016/dsa-3466
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.securityfocus.com/bid/82801
- http://www.securitytracker.com/id/1034914
- https://github.com/krb5/krb5/commit/df17a1224a3406f57477bcd372c61e04c0e5a5bb