CVE-2021-31807 Integer overflow in n/a

What is CVE-2021-31807?

CVE-2021-31807 is a medium-severity vulnerability in Fedoraproject Fedora, published on 8 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.

Weakness: CWE-190

Which versions are affected by CVE-2021-31807?

It affects 3 products.

Products include Fedoraproject Fedora, Netapp Cloud Manager, Squid-Cache Squid.

How do I fix CVE-2021-31807?

Upgrade to a fixed version.

Is CVE-2021-31807 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-31807 exists.

Public exploit code: 1 Metasploit module.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2021-31807, DEBIAN-CVE-2021-31807, GHSA-34v2-m9jr-2wg3, UBUNTU-CVE-2021-31807.