Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWhyM2MtNm1tcC02bTM5

Memory corruption slice-deque

Affected versions of this crate did not properly update the head and tail of the deque when inserting and removing elements from the front if, before insertion or removal, the tail of the deque was in the mirrored memory region, and if, after insertion or removal, the head of the deque is exactly at the beginning of the mirrored memory region.

An attacker that controls both element insertion and removal into the deque could put it in a corrupted state. Once the deque enters such an state, its head and tail are corrupted, but in bounds of the allocated memory. This can result in partial reads and writes, reads of uninitialized memory, reads of memory containing previously dropped objects, etc. An attacker could exploit this to alter program execution.

The flaw was corrected by properly updating the head and tail of the deque in this case.

Permalink: https://github.com/advisories/GHSA-hr3c-6mmp-6m39
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWhyM2MtNm1tcC02bTM5
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: over 2 years ago
Updated: 11 months ago

CVSS Score: 9.8
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-hr3c-6mmp-6m39, CVE-2018-20995
References:

• https://nvd.nist.gov/vuln/detail/CVE-2018-20995
• https://rustsec.org/advisories/RUSTSEC-2018-0008.html
• https://github.com/gnzlbg/slice_deque/issues/57
• https://github.com/advisories/GHSA-hr3c-6mmp-6m39

Repository: https://github.com/gnzlbg/slice_deque
Blast Radius: 29.5

Affected Packages