CVE-2018-20103

An issue was discovered in dns.c in HAProxy through 1.8.14. In the case of a compressed pointer, a crafted packet can trigger infinite recursion by making the pointer point to itself, or create a long chain of valid pointers resulting in stack exhaustion.

This update for haproxy to version 1.8.15 fixes the following issues:

Security issues fixed:

• CVE-2018-20102: Fixed an out-of-bounds read in dns_validate_dns_response(), which allowed for memory disclosure (bsc#1119368)
• CVE-2018-20103: Fixed an infinite recursion via crafted packet allows stack exhaustion and denial of service (bsc#1119419)

Other notable bug fixes:

• Fix off-by-one write in dns_validate_dns_response()
• Fix out-of-bounds read via signedness error in dns_validate_dns_response()
• Prevent out-of-bounds read in dns_validate_dns_response()
• Prevent out-of-bounds read in dns_read_name()
• Prevent stack-exhaustion via recursion loop in dns_read_name

For a full list of changes, please refer to: https://www.haproxy.org/download/1.8/src/CHANGELOG

This update was imported from the SUSE:SLE-15:Update update project.

These are all security issues fixed in the haproxy-2.4.4+git0.acb1d0bea-1.2 package on the GA media of openSUSE Tumbleweed.

This update for haproxy to version 1.8.15 fixes the following issues:

Security issues fixed:

• CVE-2018-20102: Fixed an out-of-bounds read in dns_validate_dns_response(), which allowed for memory disclosure (bsc#1119368)
• CVE-2018-20103: Fixed an infinite recursion via crafted packet allows stack exhaustion and denial of service (bsc#1119419)

Other notable bug fixes:

• Fix off-by-one write in dns_validate_dns_response()
• Fix out-of-bounds read via signedness error in dns_validate_dns_response()
• Prevent out-of-bounds read in dns_validate_dns_response()
• Prevent out-of-bounds read in dns_read_name()
• Prevent stack-exhaustion via recursion loop in dns_read_name

For a full list of changes, please refer to: https://www.haproxy.org/download/1.8/src/CHANGELOG

It was discovered that HAProxy incorrectly handled certain requests. An attacker could possibly use this to expose sensitive information. (CVE-2018-20102)

It was discovered that HAProxy incorrectly handled certain requests. A attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-20103, CVE-2018-20615)