31cd3d13aa
tcpcheck_ldap_expect_bindrsp() parses ASN.1 BER-encoded LDAP responses from the health check target. After reading the outer message size and validating protocol fields, it encounters a long-form BER length for the bindResponse value (high bit set in the length byte). The code reads nbytes = (*ptr & 0x7f) then advances ptr by 1 + nbytes without checking that enough bytes remain in the receive buffer. So, it is possible to read more data than available. Note that it is only possible if the LDAP response was forged because the message length was already checked. LDAP response remains quite short and it is not possible to read outside the buffer area. So at worst, garbage are parsed and a wrong result is reported by the LDAP health-check. Most probably an error will be reported. This patch could be backported to all stable versions. |
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HAProxy
HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
Installation
The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.
Getting help
The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.
The issue tracker is only for bug reports or feature requests.
Documentation
The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.
Please refer to the following files depending on what you're looking for:
- INSTALL for instructions on how to build and install HAProxy
- BRANCHES to understand the project's life cycle and what version to use
- LICENSE for the project's license
- CONTRIBUTING for the process to follow to submit contributions
The more detailed documentation is located into the doc/ directory:
- doc/intro.txt for a quick introduction on HAProxy
- doc/configuration.txt for the configuration's reference manual
- doc/lua.txt for the Lua's reference manual
- doc/SPOE.txt for how to use the SPOE engine
- doc/network-namespaces.txt for how to use network namespaces under Linux
- doc/management.txt for the management guide
- doc/regression-testing.txt for how to use the regression testing suite
- doc/peers.txt for the peers protocol reference
- doc/coding-style.txt for how to adopt HAProxy's coding style
- doc/internals for developer-specific documentation (not all up to date)
License
HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.