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broadcomBroadcom Security ResponseBSNSA22347
HistoryAug 01, 2023 - 12:00 a.m.

DOS for Handling of crafted recursive ASN.1 structures

2023-08-0100:00:00
Broadcom Security Response
support.broadcom.com
13

6.5 Medium

AI Score

Confidence

High

0.008 Low

EPSS

Percentile

81.5%

Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources, so this is considered safe. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g). Fixed in OpenSSL 1.0.2o (Affected 1.0.2b-1.0.2n).