Bug 2153239 (CVE-2022-3996) - CVE-2022-3996 openssl: double locking leads to denial of service
Summary: CVE-2022-3996 openssl: double locking leads to denial of service
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2022-3996
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 2153028
TreeView+ depends on / blocked
 
Reported: 2022-12-14 10:45 UTC by Sandipan Roy
Modified: 2022-12-20 03:12 UTC (History)
20 users (show)

Fixed In Version:
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Doc Text:
A vulnerability was found in OpenSSL. This security flaw occurs 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 issue results in a denial of service when the affected process hangs. Policy processing enabled on a publicly-facing server is not considered a standard setup. Policy processing is enabled by passing the `-policy' argument to the command line utilities or by calling either the` X509_VERIFY_PARAM_add0_policy()' or `X509_VERIFY_PARAM_set1_policies()' functions.
Clone Of:
Environment:
Last Closed: 2022-12-15 16:48:33 UTC
Embargoed:

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Description Sandipan Roy 2022-12-14 10:45:55 UTC 
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.

https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7
https://www.openssl.org/news/secadv/20221213.txt
Comment 1 Product Security DevOps Team 2022-12-15 16:48:31 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-3996
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