Heap Vulnerability in HAProxy HPACK Decoder
CVE-2020-11100

8.8HIGH

Key Information:

Vendor

Haproxy

Status
Haproxy
Vendor
CVE Published:
2 April 2020

What is CVE-2020-11100?

A vulnerability exists in the HPACK decoder of HAProxy versions 1.8 through 2.1.3. An attacker can exploit this vulnerability by sending a specially crafted HTTP/2 request, allowing them to write arbitrary bytes in memory. This manipulation of the heap may lead to remote code execution, potentially compromising the affected system. Users are advised to update to HAProxy version 2.1.4 or later to mitigate this risk.

References

http://www.haproxy.org
x_refsource_MISC
https://www.haproxy.org/download/2.1/src/CHANGELOG
x_refsource_CONFIRM
https://lists.debian.org/debian-security-announce/2020/ms...
x_refsource_CONFIRM

EPSS Score

78% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.