Out-of-Bounds Affecting wget package, versions <1.18-5+deb9u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN9-WGET-300458
- published27 Oct 2017
- disclosed27 Oct 2017
Introduced: 27 Oct 2017
CVE-2017-13089 (opens in a new tab)How to fix?
Upgrade Debian:9 wget to version 1.18-5+deb9u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream wget package and not the wget package as distributed by Debian.
See How to fix? for Debian:9 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2017-13089
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13089
- http://www.debian.org/security/2017/dsa-4008
- https://security.gentoo.org/glsa/201711-06
- http://git.savannah.gnu.org/cgit/wget.git/commit/?id=d892291fb8ace4c3b734ea5125770989c215df3f
- https://github.com/r1b/CVE-2017-13089
- https://www.synology.com/support/security/Synology_SA_17_62_Wget
- https://www.viestintavirasto.fi/en/cybersecurity/vulnerabilities/2017/haavoittuvuus-2017-037.html
- https://access.redhat.com/errata/RHSA-2017:3075
- http://www.securityfocus.com/bid/101592
- http://www.securitytracker.com/id/1039661
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-13089