PT-2018-9532 · Openssl+2 · Pyopenssl+2

Reaperhulk · Published 2018-10-08 · Updated 2024-05-13 · CVE-2018-1000808

Positive Technologies (AI Summary)

CVSS v4.0

8.2

High

Base vector

AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions pyopenssl versions prior to 17.5.0

Description The issue is related to a memory management problem in the PKCS #12 Store of pyopenssl, which can lead to a denial of service if memory runs low or is exhausted. This can be exploited by initiating a TLS connection or any action that causes the calling application to reload certificates from a PKCS #12 store, potentially allowing a remote attacker to consume resources. The estimated number of potentially affected devices and details about real-world incidents are not provided.

Recommendations For versions prior to 17.5.0, update to version 17.5.0 or later to resolve the issue. As a temporary workaround, consider restricting operations on PKCS #12 stores to minimize the risk of exploitation. Avoid initiating unnecessary TLS connections or actions that cause the calling application to reload certificates from a PKCS #12 store until the issue is resolved.

Fix

DoS

Memory Leak

Improper Resource Release

Weakness Enumeration

CWE-401

CWE-404

Related Identifiers

CVE-2018-1000808

GHSA-2RCM-PHC9-3945

OPENSUSE-SU-2019_1104-1

PYSEC-2018-24

RHSA-2019:0085

SUSE-RU-2019:1161-1

SUSE-SU-2018:4063-1

SUSE-SU-2024:1626-1

USN-3813-1

Affected Products

Suse

Ubuntu

Pyopenssl

References · 84

• https://github.com/pyca/pyopenssl/pull/723 · Patch
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00014.html · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:1626-1 · Vendor Advisory
• https://usn.ubuntu.com/3813-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-1000808 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-RU-2019:1161-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-1000808 · Security Note
• https://osv.dev/vulnerability/ALPINE-CVE-2018-1000808 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-1000808 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-2rcm-phc9-3945 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:4063-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3813-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-1000807 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-1000808 · Security Note
• https://osv.dev/vulnerability/USN-3813-1 · Vendor Advisory