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CVE-2019-18277

CVE-2019-18277

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

A flaw was found in HAProxy before 2.0.6. In legacy mode, messages featuring a transfer-encoding header missing the "chunked" value were not being correctly rejected. The impact was limited but if combined with the "http-reuse always" setting, it could be used to help construct an HTTP request smuggling attack against a vulnerable component employing a lenient parser that would ignore the content-length header as soon as it saw a transfer-encoding one (even if not entirely valid according to the specification).

CVSS 7.5 · High · EPSS 10.1% · Fix available

Published
Updated

Stack: system · web

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • haproxy Debian:12

    Affected ranges
    • ECOSYSTEM: < 2.0.6-1

    Update to 2.0.6-1

  • haproxy Debian:13

    Affected ranges
    • ECOSYSTEM: < 2.0.6-1

    Update to 2.0.6-1

  • haproxy Debian:14

    Affected ranges
    • ECOSYSTEM: < 2.0.6-1

    Update to 2.0.6-1

  • haproxy Ubuntu:16.04:LTS

    Versions
    • 1.5.14-1
    • 1.5.15-1
    • 1.6.2-1
    • 1.6.2-2
    • 1.6.2-2ubuntu1
    • 1.6.2-2ubuntu3
    • 1.6.3-1
    • 1.6.3-1ubuntu0.1
    • 1.6.3-1ubuntu0.2
    Affected ranges
    • ECOSYSTEM: < 1.6.3-1ubuntu0.3

    Update to 1.6.3-1ubuntu0.3

  • haproxy Ubuntu:18.04:LTS

    Versions
    • 1.7.9-1ubuntu1
    • 1.7.9-1ubuntu2
    • 1.8.4-1
    • 1.8.7-1
    • 1.8.8-1
    • 1.8.8-1ubuntu0.1
    • 1.8.8-1ubuntu0.2
    • 1.8.8-1ubuntu0.3
    • 1.8.8-1ubuntu0.4
    • 1.8.8-1ubuntu0.6
    Affected ranges
    • ECOSYSTEM: < 1.8.8-1ubuntu0.7

    Update to 1.8.8-1ubuntu0.7

Original sources

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