CVE-2018-20991 : An issue was discovered in the smallvec crate before 0.6.3 for Rust. The Iterato

An issue was discovered in the smallvec crate before 0.6.3 for Rust. The Iterator implementation mishandles destructors, leading to a double free.

Published 2019-08-26 15:15:11

Updated 2019-08-30 18:37:27

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2018-20991

Servo » Smallvec
Versions from including (>=) 0.3.2 and before (<) 0.6.3
cpe:2.3:a:servo:smallvec:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.43%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 59 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-415 Double Free

The product calls free() twice on the same memory address.

Assigned by: nvd@nist.gov (Primary)

https://rustsec.org/advisories/RUSTSEC-2018-0003.html

RUSTSEC-2018-0003: smallvec: Possible double free during unwinding in SmallVec::insert_many › RustSec Advisory Database
Third Party Advisory

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