Vulnerability · Published Nov 3, 2021 · Assigned by apache
CVE-2021-37147Request Smuggling - LF line ending
High 7.5
In plain English
A high-severity improper input validation in Apache Traffic Server from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)2.5%top 15.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Improper input validation vulnerability in header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 8.1.2 and 9.0.0 to 9.1.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | trafficserver | 9.1.1+ds-1 | DEBIAN-CVE-2021-37147 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Traffic Server | 8.0.0 to 8.1.2 and 9.0.0 to 9.1.0 |
Weakness: CWE-20, CWE-444
References
- https://lists.apache.org/thread/k01797hyncx53659wr3o72s5cvkc3164 x_refsource_MISC
- DSA-5153 vendor-advisory, x_refsource_DEBIAN