CVE-2023-0056 Denial of service in haproxy
An authenticated remote attacker can crash the HAProxy service by running a malicious server, impacting availability.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-0056?
CVE-2023-0056 is a medium-severity denial of service vulnerability in Fedoraproject Extra Packages for Enterprise Linux, published on 23 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An uncontrolled resource consumption vulnerability was discovered in HAProxy which could crash the service. This issue could allow an authenticated remote attacker to run a specially crafted malicious server in an OpenShift cluster. The biggest impact is to availability.
Weakness: CWE-400
Which versions are affected by CVE-2023-0056?
1 open source package ship an affected version, including haproxy. It affects 9 products.
| Package | Affected | Fixed in |
|---|---|---|
haproxy Bitnami | All versions | None |
Linux distribution packages (16)
haproxy Red Hat:openshift:4.10::el8 | All versions | 0:2.2.19-3.el8 |
haproxy-debugsource Red Hat:openshift:4.10::el8 | All versions | 0:2.2.19-3.el8 |
haproxy22 Red Hat:openshift:4.10::el8 | All versions | 0:2.2.19-3.el8 |
haproxy22-debuginfo Red Hat:openshift:4.10::el8 | All versions | 0:2.2.19-3.el8 |
haproxy Red Hat:openshift:4.11::el8 | All versions | 0:2.2.24-2.el8 |
haproxy-debugsource Red Hat:openshift:4.11::el8 | All versions | 0:2.2.24-2.el8 |
haproxy22 Red Hat:openshift:4.11::el8 | All versions | 0:2.2.24-2.el8 |
haproxy22-debuginfo Red Hat:openshift:4.11::el8 | All versions | 0:2.2.24-2.el8 |
haproxy Red Hat:openshift:4.9::el8 | All versions | 0:2.2.15-6.el8 |
haproxy-debugsource Red Hat:openshift:4.9::el8 | All versions | 0:2.2.15-6.el8 |
haproxy22 Red Hat:openshift:4.9::el8 | All versions | 0:2.2.15-6.el8 |
haproxy22-debuginfo Red Hat:openshift:4.9::el8 | All versions | 0:2.2.15-6.el8 |
haproxy SUSE:Linux Enterprise High Availability Extension 15 SP4 | All versions | 2.4.8+git0.d1f8d41e0-150400.3.6.1 |
haproxy SUSE:Linux Enterprise Micro 5.3 | All versions | 2.4.8+git0.d1f8d41e0-150400.3.6.1 |
haproxy openSUSE:Leap 15.4 | All versions | 2.4.8+git0.d1f8d41e0-150400.3.6.1 |
haproxy openSUSE:Leap Micro 5.3 | All versions | 2.4.8+git0.d1f8d41e0-150400.3.6.1 |
Products include Fedoraproject Extra Packages for Enterprise Linux, Fedoraproject Fedora, Haproxy Haproxy, Redhat Ceph Storage, Redhat Openshift Container Platform, Redhat Openshift Container Platform for Ibm Linuxone and 3 more.
How do I fix CVE-2023-0056?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-0056 being exploited?
There is no known exploitation of CVE-2023-0056 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Extra Packages for Enterprise Linux
- CVE-2023-34152 Command injection in ImageMagick
- CVE-2022-4170 Code injection in rxvt-unicode
- CVE-2022-40315 Moodle Minor SQL injection risk in admin user browsing
- CVE-2022-45152 Moodle blind Server-Side Request Forgery (SSRF) vulnerability in LTI provider library
- CVE-2022-24882 Server side NTLM does not properly check parameters in FreeRDP
All Fedoraproject Extra Packages for Enterprise Linux vulnerabilities
Sources
Also known as BIT-haproxy-2023-0056, DEBIAN-CVE-2023-0056, GHSA-43q4-pf55-3xhc, MINI-5c52-c7pj-g84h, MINI-5gpm-hc6r-7m5j, MINI-g7fr-h7v4-5cxp and 9 more.