Description
libfetch before 2021-07-26, as used in apk-tools, xbps, and other products, mishandles numeric strings for the FTP and HTTP protocols. The FTP passive mode implementation allows an out-of-bounds read because strtol is used to parse the relevant numbers into address bytes. It does not check if the line ends prematurely. If it does, the for-loop condition checks for the '\0' terminator one byte too late.
Published: 2021-08-03
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-22783 libfetch before 2021-07-26, as used in apk-tools, xbps, and other products, mishandles numeric strings for the FTP and HTTP protocols. The FTP passive mode implementation allows an out-of-bounds read because strtol is used to parse the relevant numbers into address bytes. It does not check if the line ends prematurely. If it does, the for-loop condition checks for the '\0' terminator one byte too late.
History

Wed, 28 May 2025 16:15:00 +0000

Type Values Removed Values Added
References

Thu, 22 May 2025 02:00:00 +0000


Subscriptions

Freebsd Libfetch
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T00:47:43.816Z

Reserved: 2021-07-05T00:00:00.000Z

Link: CVE-2021-36159

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-08-03T14:15:08.233

Modified: 2024-11-21T06:13:13.570

Link: CVE-2021-36159

cve-icon Redhat

Severity : Important

Publid Date: 2021-08-03T00:00:00Z

Links: CVE-2021-36159 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses