CVE-2017-13090

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Summary

CVECVE-2017-13090
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-10-27 19:29:00 UTC
Updated2017-12-30 02:29:00 UTC
DescriptionThe 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 chunk's length, but doesn't 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 And Classification

Problem Types: CWE-119

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 8.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Operating System Debian Debian Linux 8.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Application Gnu Wget All All All All

References

ReferenceSourceLinkTags
wget Buffer Overflows in Processing HTTP Data Lets Remote Users Execute Arbitrary Code - SecurityTracker SECTRACK www.securitytracker.com Issue Tracking, Third Party Advisory, VDB Entry
wget.git - GNU Wget CONFIRM git.savannah.gnu.org Issue Tracking, Patch, Third Party Advisory
Debian -- Security Information -- DSA-4008-1 wget DEBIAN www.debian.org Issue Tracking, Third Party Advisory
GNU Wget: Multiple vulnerabilities (GLSA 201711-06) — Gentoo Security GENTOO security.gentoo.org Issue Tracking, Third Party Advisory
Red Hat Customer Portal REDHAT access.redhat.com
GNU wget CVE-2017-13090 Heap Buffer Overflow Vulnerability BID www.securityfocus.com Issue Tracking, Third Party Advisory, VDB Entry
Synology-SA-17:62 Wget | Synology Inc. CONFIRM www.synology.com
Viestintävirasto - Critical vulnerabilities in Wget MISC www.viestintavirasto.fi Issue Tracking, Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 378216 Virtuozzo Linux Security Update for wget (VZLSA-2017:3075)
  • 500735 Alpine Linux Security Update for wget
  • 504511 Alpine Linux Security Update for wget
  • 710494 Gentoo Linux GNU Wget Multiple Vulnerabilities (GLSA 201711-06)
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