PT-2020-2138 · Haproxy+5 · Haproxy+5
Felix Wilhelm
·
Published
2020-04-02
·
Updated
2024-06-15
·
CVE-2020-11100
CVSS v2.0
9.0
High
| Vector | AV:N/AC:L/Au:S/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
HAProxy versions 1.8 through 2.1.4
Description
The issue is related to the hpack dht insert function in the HPACK decoder, which can be exploited by a remote attacker via a crafted HTTP/2 request. This could lead to writing arbitrary bytes around a certain location on the heap, possibly causing remote code execution. The vulnerability may allow an attacker to gain unauthorized access to confidential data, cause a denial of service, or impact data integrity.
Recommendations
For HAProxy versions 1.8 through 2.1.4, update to version 2.1.4 or later to resolve the issue.
As a temporary workaround, consider disabling HTTP/2 support until a patch is available.
Restrict access to the hpack dht insert function in the HPACK decoder to minimize the risk of exploitation.
Exploit
Fix
RCE
Memory Corruption
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Haproxy
Red Hat
Suse
Ubuntu