Is CVE-2021-28876 in the CISA KEV catalog?

No. CVE-2021-28876 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-28876?

CVE-2021-28876 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-28876?

CVE-2021-28876 has an EPSS score of 1.57% (72th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-28876?

Upgrade rustc on debian 12 to 1.53.0+dfsg1-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-28876

MEDIUMEPSS 72th pctl

5.3

CVSS v3

NVD

Description

In the standard library in Rust before 1.52.0, the Zip implementation has a panic safety issue. It calls __iterator_get_unchecked() more than once for the same index when the underlying iterator panics (in certain conditions). This bug could lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.

CWE-755

How to fix

Remediation Available

rustcDebian

Fixed in:1.53.0+dfsg1-1CVE-2021-28876

Rust (GNU)Windows application

Affected:1.52.0Fixed in:1.52.0The Rust Project Developers

Rust (MSVC)Windows application

Affected:1.52.0Fixed in:1.52.0The 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

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

1.57%probability of exploitation in 30 days

72ndpercentile

Elevated risk: more likely to be exploited than 72% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Third-Party Advisory1

security.gentoo.org

Other references3

Related Vulnerabilities

Other CWE-755 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-5638	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-7247	Critical	9.8	99%	KEV	Fix
CVE-2023-36933	High	7.5	72%	-	Fix
CVE-2018-0934	High	7.5	66%	-	Fix
CVE-2019-14287	High	8.8	64%	-	Fix
CVE-2019-12815	Critical	9.8	58%	-	Fix

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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.