Vulnerability Details : CVE-2021-28877
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.
Vulnerability category: Overflow
Products affected by CVE-2021-28877
- cpe:2.3:a:rust-lang:rust:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-28877
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 44 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-28877
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-28877
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-28877
-
https://security.gentoo.org/glsa/202210-09
Rust: Multiple Vulnerabilities (GLSA 202210-09) — Gentoo securityThird Party Advisory
-
https://github.com/rust-lang/rust/pull/80670
TrustedRandomAaccess specialization composes incorrectly for nested iter::Zips by the8472 · Pull Request #80670 · rust-lang/rust · GitHubIssue Tracking;Patch;Third Party Advisory
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