CVE-2017-13090

Description

The retr.c:fd_read_body() function is called when processing OK responses. When the response is sent chunked in wget before 1.19.2, the chunk parser uses strtol() to read each chunks length, but doesnt check that the chunk length is a non-negative number. The code then tries to read the chunk in pieces of 8192 bytes by using the MIN() macro, but ends up passing the negative chunk length to retr.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. The attacker can corrupt malloc metadata after the allocated buffer.

Risk Information

Base Score

8.8

MODERATE

Vector

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

EPSS Score

Exploitation Probability

8.139

Associated Vulnerability

Vulnerability	OS Platform
retrieves files from the web (USN-3464-1) wget_1.18-2ubuntu1.1_i386.deb	Linux
retrieves files from the web (USN-3464-1) wget_1.18-2ubuntu1.1_amd64.deb	Linux
retrieves files from the web (USN-3464-1) wget_1.19.1-3ubuntu1.1_amd64.deb	Linux
wget security update(DSA-4008-1) wget_1.18-5_i386.deb	Linux
(RHSA-2017:3075) Important: wget security update wget-1.14-15.el7_4.1.x86_64.rpm	Linux
SUSE-SU-2017:2871-2(SUSE Linux Enterprise Desktop 12-SP2 ) wget-1.14-21.3.1.x86_64.rpm	Linux
SUSE-SU-2017:2871-2(SUSE Linux Enterprise Desktop 12-SP2 ) wget-debuginfo-1.14-21.3.1.x86_64.rpm	Linux
SUSE-SU-2017:2871-2(SUSE Linux Enterprise Desktop 12-SP2 ) wget-debugsource-1.14-21.3.1.x86_64.rpm	Linux
(CESA-2017:3075) Important: wget security update wget-1.14-15.el7_4.1.x86_64.rpm	Linux
Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability (CVE-2017-13090)	NCM

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234