CVE-2017-13089

GNU Wget: stack overflow in HTTP protocol handling

Published Oct 27, 2017 CVSS 3.0 · 8.8 High EPSS 79.9% KEV · Not listed
Description
The http.c:skip_short_body() function is called in some circumstances, such as when processing redirects. When the response is sent chunked in wget before 1.19.2, the chunk parser uses strtol() to read each chunk's length, but doesn't check that the chunk length is a non-negative number. The code then tries to skip the chunk in pieces of 512 bytes by using the MIN() macro, but ends up passing the negative chunk length to connect.c:fd_read(). As fd_read() takes an int argument, the high 32 bits of the chunk length are discarded, leaving fd_read() with a completely attacker controlled length argument.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-1149-1 wget security update
Debian DSA Debian DSA DSA-4008-1 wget security update
Ubuntu USN Ubuntu USN USN-3464-1 Wget vulnerabilities
Ubuntu USN Ubuntu USN USN-3464-2 Wget vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
certcc
Published
Updated
Sep 17, 2024, 1:15 AM
Reserved
Aug 22, 2017, 12:00 AM
Status
Modified
Published
Oct 27, 2017, 7:29 PM
Modified
Jun 17, 2026, 1:04 AM
Severity
Important
Public date
Oct 26, 2017, 3:00 PM