The iakerb_gss_export_sec_context function in lib/gssapi/krb5/iakerb.c in MIT Kerberos 5 (aka krb5) 1.14 pre-release 2015-09-14 improperly accesses a certain pointer, which allows remote authenticated users to cause a denial of service (memory corruption) or possibly have unspecified other impact by interacting with an application that calls the gss_export_sec_context function. NOTE: this vulnerability exists because of an incorrect fix for CVE-2015-2696.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://github.com/krb5/krb5/commit/3db8dfec1ef50ddd78d6ba9503185995876a39fd | |
| http://krbdev.mit.edu/rt/Ticket/Display.html?id=8273 | vendor advisory |
| http://lists.opensuse.org/opensuse-updates/2015-11/msg00116.html | vendor advisory |
| http://lists.opensuse.org/opensuse-updates/2015-12/msg00124.html | vendor advisory |
| http://www.ubuntu.com/usn/USN-2810-1 | vendor advisory |