| Name | CVE-2009-0847 |
| Description | The asn1buf_imbed function in the ASN.1 decoder in MIT Kerberos 5 (aka krb5) 1.6.3, when PK-INIT is used, allows remote attackers to cause a denial of service (application crash) via a crafted length value that triggers an erroneous malloc call, related to incorrect calculations with pointer arithmetic. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-1766-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| krb5 (PTS) | bullseye (security), bullseye | 1.18.3-6+deb11u5 | fixed |
| bookworm, bookworm (security) | 1.20.1-2+deb12u2 | fixed |
| sid, trixie | 1.21.3-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| krb5 | source | etch | 1.4.4-7etch7 | | DSA-1766-1 | |
| krb5 | source | lenny | 1.6.dfsg.4~beta1-5lenny1 | | DSA-1766-1 | |
| krb5 | source | (unstable) | 1.6.dfsg.4~beta1-13 | | | |
Notes
[etch] - krb5 <not-affected> (Affected code present, but not exploitable before 1.6.3)