openssl: CVE-2022-3996: X.509 Policy Constraints Double Locking

Debian Bug report logs - #1027102
openssl: CVE-2022-3996: X.509 Policy Constraints Double Locking

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: openssl: CVE-2022-3996: X.509 Policy Constraints Double Locking

Date: Tue, 27 Dec 2022 21:07:39 +0100

Source: openssl
Version: 3.0.7-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for openssl.

As this is a low severity issue it is basically sufficient to have it
fixed once 3.0.8 is released, just filling for tracking in the BTS.

CVE-2022-3996[0]:
| If an X.509 certificate contains a malformed policy constraint and
| policy processing is enabled, then a write lock will be taken twice
| recursively. On some operating systems (most widely: Windows) this
| results in a denial of service when the affected process hangs. Policy
| processing being enabled on a publicly facing server is not considered
| to be a common setup. Policy processing is enabled by passing the
| `-policy' argument to the command line utilities or by calling either
| `X509_VERIFY_PARAM_add0_policy()' or
| `X509_VERIFY_PARAM_set1_policies()' functions.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2022-3996
    https://www.cve.org/CVERecord?id=CVE-2022-3996
[1] https://www.openssl.org/news/secadv/20221213.txt

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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