CVE-2012-1015

2012-07-3100:00:00

ubuntu.com

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.134 Low

EPSS

Percentile

95.5%

JSON

The kdc_handle_protected_negotiation function in the Key Distribution
Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x, 1.9.x before 1.9.5, and
1.10.x before 1.10.3 attempts to calculate a checksum before verifying that
the key type is appropriate for a checksum, which allows remote attackers
to execute arbitrary code or cause a denial of service (uninitialized
pointer free, heap memory corruption, and daemon crash) via a crafted
AS-REQ request.

Notes

Author	Note
sbeattie	krb5 1.8 and newer code execution potential probably blocked by glibc double-free detection

OSVersionArchitecturePackageVersionFilename
ubuntu10.04noarchkrb5< 1.8.1+dfsg-2ubuntu0.11UNKNOWN
ubuntu11.04noarchkrb5< 1.8.3+dfsg-5ubuntu2.3UNKNOWN
ubuntu11.10noarchkrb5< 1.9.1+dfsg-1ubuntu2.3UNKNOWN
ubuntu12.04noarchkrb5< 1.10+dfsg~beta1-2ubuntu0.3UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	10.04	noarch	krb5	< 1.8.1+dfsg-2ubuntu0.11	UNKNOWN
ubuntu	11.04	noarch	krb5	< 1.8.3+dfsg-5ubuntu2.3	UNKNOWN
ubuntu	11.10	noarch	krb5	< 1.9.1+dfsg-1ubuntu2.3	UNKNOWN
ubuntu	12.04	noarch	krb5	< 1.10+dfsg~beta1-2ubuntu0.3	UNKNOWN