Red Hat update for haproxy

1) Buffer over-read

EUVDB-ID: #VU14915

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-14645

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition within the HPACK decoder in hpack_valid_idx() function. A remote attacker can send a specially specially crafted HTTP/2 request, trigger out-of-bounds read error and perform a denial of service attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for Power: 7.5

Red Hat Enterprise Linux for x86_64: 7.0 - 7.4

External links

http://access.redhat.com/errata/RHSA-2018:2882

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.