CVE-2023-38522
Apache Traffic Server accepts characters that are not allowed for HTTP field names and forwards malformed requests to origin servers.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.99%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Apache Traffic Server accepts characters that are not allowed for HTTP field names and forwards malformed requests to origin servers. This can be utilized for request smuggling and may also lead cache poisoning if the origin servers are vulnerable. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4. Users are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.99% probability · 60th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-444
- Affected
- apache/traffic server
- Source
- security@apache.org
References
- https://lists.apache.org/thread/c4mcmpblgl8kkmyt56t23543gp8v56m0Mailing List, Vendor Advisory
- https://lists.apache.org/thread/c4mcmpblgl8kkmyt56t23543gp8v56m0Mailing List, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/09/msg00040.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.