Resource exhaustion in Apache Traffic Server
CVE-2020-9494
Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to certain types of HTTP/2 HEADERS frames that can cause the server to allocate a large amount of memory and spin the thread.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.036 (89.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.039 · newest: 0.036 · change: -0.003
Affected products
- Apache Traffic Server
- Apache Software Foundation Traffic Server — versions 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, 8.0.0 to 8.0.7
- Debian Linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.apache.org/thread.html/rf7f86917f42fdaf904d99560cba0c016e03baea6244c47efe… (Mailing List, Vendor Advisory)
- www.debian.org/security/2020/dsa-4710 (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/03/01/2 (mailing-list, Not Applicable)
Frequently asked questions
- What is CVE-2020-9494?
- CVE-2020-9494 is a high-severity vulnerability in Apache Traffic Server, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2020-06-24.
- How severe is CVE-2020-9494?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-9494 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.