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CVE-2017-13089

8.8
HIGHCVSS v3.1 Base Score
75.77%
HIGH RiskEPSS (99th percentile)

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.

Published: 10/27/2017
Modified: 5/13/2026
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Vulnerability Summary

CVSS v3 Score

8.8HIGH

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

CVSS v2 Score

9.3

AV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS Score (Exploitation Probability)

75.77%HIGH Exploitation Risk
99th percentile

This vulnerability has a 75.77% probability of being exploited in the next 30 days, ranking higher than 99% of all scored CVEs.

CWE Classification

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Same Weakness Type(CWE-121)

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Similar SeverityHIGH