CVE & CISA-KEV Catalog

CVE-2021-29922

CRITICALEPSS 84th pctl
9.1
CVSS v3
NVD

Description

library/std/src/net/parser.rs in Rust before 1.53.0 does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses, because of unexpected octal interpretation.

How to fix

Remediation Available
rustcDebian
Fixed in:1.53.0+dfsg1-1CVE-2021-29922
Fixed in:1.53.0+dfsg1-1CVE-2021-29922
Fixed in:1.53.0+dfsg1-1CVE-2021-29922
Rust (GNU)Windows application
Affected:1.53.0Fixed in:1.53.0The Rust Project Developers
Rust (MSVC)Windows application
Affected:1.53.0Fixed in:1.53.0The Rust Project Developers

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

2.62%probability of exploitation in 30 days
84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Exploit1
Vendor Advisory1
Third-Party Advisory2
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.