CVE-2023-0464 fix exponential growth of policy tree for 3.1 #20570
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paulidale
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Mar 22, 2023
paulidale
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- documentation is added or updated
- tests are added or updated
A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Fixes CVE-2023-0464 Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
These trees have pathological properties with respect to building. The small tree stays within the imposed limit, the large tree doesn't. The large tree would consume over 150Gb of RAM to process. Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
paulidale
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approval: ready to merge
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Approved in security repo, merged. |
openssl-machine
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Mar 22, 2023
A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Fixes CVE-2023-0464 Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from #20570)
openssl-machine
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that referenced
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Mar 22, 2023
These trees have pathological properties with respect to building. The small tree stays within the imposed limit, the large tree doesn't. The large tree would consume over 150Gb of RAM to process. Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from #20570)
openssl-machine
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Mar 22, 2023
Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from #20570)
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