Patch Ticker

h2o access-log formatter buffer overflow

Using a certain logging setting in h2o web server lets one request stop it.

Summary

The access-log formatter in the h2o web server can write past its log-line buffer. When an affected custom access-log format is configured, a matching request can crash the server.

Affected when

  • Affected custom access-log format configured

What to do

Update to a build that includes commit 48b7ae12107fd2b118e4641da49599e9aac8edd8.

Products and platforms

  • h2o

CVE IDs

Sources

Times

First published

First seen