CVE-2012-1015

critical

Published 2012-08-06 · Modified 2026-04-29

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

9.3

Description

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.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`1.10.1+dfsg-2`
sid	Fixed	`1.10.1+dfsg-2`
forky	Fixed	`1.10.1+dfsg-2`
bullseye	Fixed	`1.10.1+dfsg-2`
bookworm	Fixed	`1.10.1+dfsg-2`

Application impact

Vendor	Product	Versions
mit	kerberos_5	`1.8`
mit	kerberos_5	`1.8.1`
mit	kerberos_5	`1.8.2`
mit	kerberos_5	`1.8.3`
mit	kerberos_5	`1.8.4`
mit	kerberos_5	`1.8.5`
mit	kerberos_5	`1.8.6`
mit	kerberos_5	`1.9.4`
mit	kerberos_5	`1.10`
mit	kerberos_5	`1.10.1`
mit	kerberos_5	`1.10.2`

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.