CVE-2023-46847 Squid: denial of service in http digest authentication
Remote attackers can cause a denial of service via buffer overflow in Squid when HTTP Digest Authentication is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-46847?
CVE-2023-46847 is a high-severity denial of service vulnerability in Redhat Enterprise Linux, published on 3 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Squid is vulnerable to a Denial of Service, where a remote attacker can perform buffer overflow attack by writing up to 2 MB of arbitrary data to heap memory when Squid is configured to accept HTTP Digest Authentication.
Weakness: CWE-120
Which versions are affected by CVE-2023-46847?
It affects 10 products.
Linux distribution packages (20)
squid Red Hat:enterprise_linux:7::server | All versions | 7:3.5.20-17.el7_9.9 |
squid-debuginfo Red Hat:enterprise_linux:7::server | All versions | 7:3.5.20-17.el7_9.9 |
squid-migration-script Red Hat:enterprise_linux:7::server | All versions | 7:3.5.20-17.el7_9.9 |
squid-sysvinit Red Hat:enterprise_linux:7::server | All versions | 7:3.5.20-17.el7_9.9 |
squid Red Hat:enterprise_linux:7::workstation | All versions | 7:3.5.20-17.el7_9.9 |
squid-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 7:3.5.20-17.el7_9.9 |
squid-migration-script Red Hat:enterprise_linux:7::workstation | All versions | 7:3.5.20-17.el7_9.9 |
squid-sysvinit Red Hat:enterprise_linux:7::workstation | All versions | 7:3.5.20-17.el7_9.9 |
squid Red Hat:rhel_aus:7.6::server | All versions | 7:3.5.20-12.el7_6.2 |
squid-debuginfo Red Hat:rhel_aus:7.6::server | All versions | 7:3.5.20-12.el7_6.2 |
squid-migration-script Red Hat:rhel_aus:7.6::server | All versions | 7:3.5.20-12.el7_6.2 |
squid-sysvinit Red Hat:rhel_aus:7.6::server | All versions | 7:3.5.20-12.el7_6.2 |
squid Red Hat:rhel_aus:7.7::server | All versions | 7:3.5.20-13.el7_7.1 |
squid-debuginfo Red Hat:rhel_aus:7.7::server | All versions | 7:3.5.20-13.el7_7.1 |
squid-migration-script Red Hat:rhel_aus:7.7::server | All versions | 7:3.5.20-13.el7_7.1 |
squid-sysvinit Red Hat:rhel_aus:7.7::server | All versions | 7:3.5.20-13.el7_7.1 |
squid Red Hat:rhel_els:6 | All versions | 7:3.1.23-24.el6_10.1 |
squid-debuginfo Red Hat:rhel_els:6 | All versions | 7:3.1.23-24.el6_10.1 |
squid34 Red Hat:rhel_els:6 | All versions | 7:3.4.14-15.el6_10.1 |
squid34-debuginfo Red Hat:rhel_els:6 | All versions | 7:3.4.14-15.el6_10.1 |
Products include Redhat Enterprise Linux, Redhat Enterprise Linux Eus, Redhat Enterprise Linux for Arm 64, Redhat Enterprise Linux for Ibm Z Systems, Redhat Enterprise Linux for Power Little Endian, Redhat Enterprise Linux Server and 4 more.
How do I fix CVE-2023-46847?
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-2023-46847 being exploited?
There is no known exploitation of CVE-2023-46847 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
- CVE-2018-14667 Red Hat JBoss RichFaces Framework Expression Language Injection
- CVE-2021-20325 Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a securit
- CVE-2018-25011 Memory corruption in libwebp
- CVE-2018-25014 Other in libwebp
- CVE-2014-3585 Supply chain in redhat-upgrade-tool
Sources
Also known as ALPINE-CVE-2023-46847, AZL-31902, AZL-63103, CLSA-2023-1700160647, CLSA-2023-1700161185, CLSA-2023-1700164396 and 12 more.