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Uncontrolled Recursion Affecting openssl-libs package, versions <1:1.0.2k-16.0.1.el7

Severity

 Recommended
0.0
medium
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
14.45% (95th percentile)

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  • Snyk IDSNYK-ORACLE7-OPENSSLLIBS-2527320
  • published10 Apr 2022
  • disclosed27 Mar 2018
Report a new vulnerability Found a mistake?

Introduced: 27 Mar 2018

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

How to fix?

Upgrade Oracle:7 openssl-libs to version 1:1.0.2k-16.0.1.el7 or higher.
This issue was patched in ELSA-2018-3221.

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 Oracle. See How to fix? for Oracle:7 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