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CVE-2017-13089

CVE-2017-13089 · GNU Wget: stack overflow in HTTP protocol handling

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 8.8 · High · EPSS 79.9% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • wget

    Versions
    • prior to 1.19.2: Affected

    No fix published

  • wget Debian:12

    Affected ranges
    • ECOSYSTEM: < 1.19.2-1

    Update to 1.19.2-1

  • wget Debian:13

    Affected ranges
    • ECOSYSTEM: < 1.19.2-1

    Update to 1.19.2-1

  • wget Debian:14

    Affected ranges
    • ECOSYSTEM: < 1.19.2-1

    Update to 1.19.2-1

  • wget Ubuntu:14.04:LTS

    Versions
    • 1.14-2ubuntu1
    • 1.14-5ubuntu1
    • 1.15-1ubuntu1
    • 1.15-1ubuntu1.14.04.1
    • 1.15-1ubuntu1.14.04.2
    Affected ranges
    • ECOSYSTEM: < 1.15-1ubuntu1.14.04.3

    Update to 1.15-1ubuntu1.14.04.3

  • wget Ubuntu:16.04:LTS

    Versions
    • 1.16.1-1ubuntu1
    • 1.17.1-1ubuntu1
    • 1.17.1-1ubuntu1.1
    • 1.17.1-1ubuntu1.2
    Affected ranges
    • ECOSYSTEM: < 1.17.1-1ubuntu1.3

    Update to 1.17.1-1ubuntu1.3

Original sources

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