Uncontrolled Recursion Affecting openssl package, versions <1:1.0.2k-16.el7
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-OPENSSL-4842391
- published26 Jul 2021
- disclosed27 Mar 2018
Introduced: 27 Mar 2018
CVE-2018-0739 (opens in a new tab)How to fix?
Upgrade RHEL:7 openssl to version 1:1.0.2k-16.el7 or higher.
This issue was patched in RHSA-2018:3221.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by RHEL.
See How to fix? for RHEL: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
- http://www.securityfocus.com/bid/103518
- http://www.securityfocus.com/bid/105609
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2ac4c6f7b2b2af20c0e2b0ba05367e454cd11b33
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9310d45087ae546e27e61ddf8f6367f29848220d
- https://nodejs.org/en/blog/vulnerability/march-2018-security-releases/
- https://securityadvisories.paloaltonetworks.com/Home/Detail/133
- https://security.netapp.com/advisory/ntap-20180330-0002/
- https://security.netapp.com/advisory/ntap-20180726-0002/
- https://www.openssl.org/news/secadv/20180327.txt
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
- https://www.tenable.com/security/tns-2018-04
- https://www.tenable.com/security/tns-2018-06
- https://www.tenable.com/security/tns-2018-07
- http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- https://access.redhat.com/security/cve/CVE-2018-0739
- https://www.debian.org/security/2018/dsa-4157
- https://www.debian.org/security/2018/dsa-4158
- https://security.gentoo.org/glsa/201811-21
- https://security.gentoo.org/glsa/202007-53
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- https://lists.debian.org/debian-lts-announce/2018/03/msg00033.html
- https://access.redhat.com/errata/RHSA-2018:3221
- http://www.securitytracker.com/id/1040576
- https://usn.ubuntu.com/3611-1/
- https://usn.ubuntu.com/3611-2/
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2ac4c6f7b2b2af20c0e2b0ba05367e454cd11b33
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=9310d45087ae546e27e61ddf8f6367f29848220d
- https://www.oracle.com//security-alerts/cpujul2021.html