CVE-2018-19115 Memory corruption in n/a

Critical 9.8 Published 8 Nov 2018 Updated 5 Aug 2024

A heap-based buffer overflow in Keepalived allows attackers to cause denial of service or potentially execute arbitrary code via crafted HTTP status codes.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2018-19115?

CVE-2018-19115 is a critical memory corruption vulnerability in Debian Debian Linux, published on 8 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

keepalived before 2.0.7 has a heap-based buffer overflow when parsing HTTP status codes resulting in DoS or possibly unspecified other impact, because extract_status_code in lib/html.c has no validation of the status code and instead writes an unlimited amount of data to the heap.

Weakness: CWE-787

Which versions are affected by CVE-2018-19115?

It affects 7 products.

Linux distribution packages (8)

`keepalived` Red Hat:enterprise_linux:7::server	All versions	`0:1.3.5-8.el7_6`
`keepalived-debuginfo` Red Hat:enterprise_linux:7::server	All versions	`0:1.3.5-8.el7_6`
`keepalived` Red Hat:enterprise_linux:7::workstation	All versions	`0:1.3.5-8.el7_6`
`keepalived-debuginfo` Red Hat:enterprise_linux:7::workstation	All versions	`0:1.3.5-8.el7_6`
`keepalived` Red Hat:rhel_eus:7.4::server	All versions	`0:1.3.5-1.el7_4.1`
`keepalived-debuginfo` Red Hat:rhel_eus:7.4::server	All versions	`0:1.3.5-1.el7_4.1`
`keepalived` Red Hat:rhel_eus:7.5::server	All versions	`0:1.3.5-7.el7_5.2`
`keepalived-debuginfo` Red Hat:rhel_eus:7.5::server	All versions	`0:1.3.5-7.el7_5.2`

Products include Debian Debian Linux, Keepalived Keepalived, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus, Redhat Enterprise Linux Server Tus and 1 more.

How do I fix CVE-2018-19115?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-19115 being exploited?

There is no known exploitation of CVE-2018-19115 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-19115, DLA-1589-1, GHSA-q8cg-hf8f-hgf3, RHSA-2019:0022, RHSA-2019:1792, RHSA-2019:1945 and 3 more.