CVE-2021-28877

CVSS V2 Medium 5 CVSS V3 High 7.5

Description

In the standard library in Rust before 1.51.0, the Zip implementation calls __iterator_get_unchecked() for the same index more than once when nested. This bug can lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.

Overview

CVE ID
CVE-2021-28877

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2021-04-11T20:15:12

Last Modified Date
2022-11-03T19:36:57

Weakness Enumerations

CWE	URL
CWE-119	http://cwe.mitre.org/data/definitions/119.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:rust-lang:rust::::::::	1	OR		1.51.0

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
PARTIAL

Base Score
5

Severity
MEDIUM

Exploitability Score
10

Impact Score
2.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
7.5

Base Severity
HIGH

Exploitability Score
3.9

Impact Score
3.6

References

Reference URL	Reference Tags
https://github.com/rust-lang/rust/pull/80670	Issue Tracking Patch Third Party Advisory
https://security.gentoo.org/glsa/202210-09	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-28877
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28877

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:14:46				Added to TrackCVE
2022-12-06 01:33:52	2021-04-11T20:15Z	2021-04-11T20:15:12	CVE Published Date	updated
2022-12-06 01:33:52		2022-11-03T19:36:57	CVE Modified Date	updated
2022-12-06 01:33:52		Analyzed	Vulnerability Status	updated
2022-12-06 01:33:56			References	updated