Uncontrolled Recursion Affecting openssl-libs package, versions <1:1.0.2k-16.amzn2.0.1


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.93% (84th percentile)

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  • Snyk IDSNYK-AMZN2-OPENSSLLIBS-1666405
  • published27 Sept 2021
  • disclosed27 Mar 2018

Introduced: 27 Mar 2018

CVE-2018-0739  (opens in a new tab)
CWE-674  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 openssl-libs to version 1:1.0.2k-16.amzn2.0.1 or higher.
This issue was patched in ALAS2-2018-1102.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl-libs package and not the openssl-libs package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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).

References