CVE Vulnerabilities

CVE-2018-20997

Use After Free

Published: Aug 26, 2019 | Modified: Nov 21, 2024
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

An issue was discovered in the openssl crate before 0.10.9 for Rust. A use-after-free occurs in CMS Signing.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Rust-openssl Rust-openssl_project * 0.10.9 (excluding)
Rust-openssl Ubuntu disco *
Rust-openssl Ubuntu eoan *
Rust-openssl Ubuntu focal *
Rust-openssl Ubuntu groovy *
Rust-openssl Ubuntu hirsute *
Rust-openssl Ubuntu impish *
Rust-openssl Ubuntu kinetic *
Rust-openssl Ubuntu lunar *
Rust-openssl Ubuntu mantic *
Rust-openssl Ubuntu oracular *
Rust-openssl Ubuntu trusty *

Potential Mitigations

References