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7.5

Proxygen may crash when processing TLS 1.3 certificate frames

CVE-2018-6343 · published 7 years ago
Summary

The Facebook Proxygen library can stop working if it receives a specially crafted certificate or certificate request message over a TLS 1.3 connection. This happens because the code assumes a secondary authentication component is present when it is not, leading to a crash. Updating Proxygen to the version released after November 19, 2018 resolves the issue.

What to do
  • Update facebook proxygen to version 2018.11.19.00 or later.
Affected software
VendorProductAffected versions
facebook proxygen >= 2018.10.29.00, < 2018.11.19.00
cpe:2.3:a:facebook:proxygen:*:*:*:*:*:*:*:*
Original advisory text
Proxygen fails to validate that a secondary auth manager is set before dereferencing it. That can cause a denial of service issue when parsing a Certificate/CertificateRequest HTTP2 Frame over a fi...
Proxygen fails to validate that a secondary auth manager is set before dereferencing it. That can cause a denial of service issue when parsing a Certificate/CertificateRequest HTTP2 Frame over a fizz (TLS 1.3) transport. This issue affects Proxygen releases starting from v2018.10.29.00 until the fix in v2018.11.19.00.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker partial control
Severity
7.5 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-476NULL Pointer Dereference
CWE-20Improper Input Validation
Timeline
Published31 Dec 2018
Updated31 Oct 2026
First seen29 Sep 2026
Sources
CVE-2018-6343 · NVD
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