Use After Free in Tinyproxy
CVE-2023-49606
A use-after-free vulnerability exists in the HTTP Connection Headers parsing in Tinyproxy 1.11.1 and Tinyproxy 1.10.0. A specially crafted HTTP header can trigger reuse of previously freed memory, which leads to memory corruption and could lead to remote code execution. An attacker needs to make an unauthenticated HTTP request to trigger this vulnerability.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.631 (99.2th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.631 · newest: 0.631 · change: 0.000
Affected products
- Tinyproxy — versions 1.11.1, Tinyproxy 1.10.0
- Tinyproxy Project — versions 1.10.0, 1.11.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- talosintelligence.com/vulnerability_reports/TALOS-2023-1889 (Exploit, Third Party Advisory)
- www.openwall.com/lists/oss-security/2024/05/07/1 (Exploit, Patch, Mailing List, Third Party Advisory, Issue Tracking)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-49606?
- CVE-2023-49606 is a critical-severity vulnerability in Tinyproxy, classified under Use After Free. CVSS score: 9.8/10. Published 2024-05-01.
- How severe is CVE-2023-49606?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2023-49606 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.