libcurl 7.49.0 to and including 7.57.0 contains an out bounds read in code handling HTTP/2 trailers. It was reported (https://github.com/curl/curl/pull/2231) that reading an HTTP/2 trailer could mess up future trailers since the stored size was one byte less than required. The problem is that the code that creates HTTP/1-like headers from the HTTP/2 trailer data once appended a string like `:` to the target buffer, while this was recently changed to `: ` (a space was added after the colon) but the following math wasn't updated correspondingly. When accessed, the data is read out of bounds and causes either a crash or that the (too large) data gets passed to client write. This could lead to a denial-of-service situation or an information disclosure if someone has a service that echoes back or uses the trailers for something.
References
Link | Resource |
---|---|
http://www.securitytracker.com/id/1040273 | Third Party Advisory VDB Entry |
https://access.redhat.com/errata/RHSA-2019:1543 | |
https://curl.haxx.se/docs/adv_2018-824a.html | Patch Vendor Advisory |
https://github.com/curl/curl/pull/2231 | Issue Tracking Patch Third Party Advisory |
https://usn.ubuntu.com/3554-1/ | Third Party Advisory |
https://www.debian.org/security/2018/dsa-4098 | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2018-01-24T22:00:00
Updated: 2019-06-18T21:06:04
Reserved: 2018-01-17T00:00:00
Link: CVE-2018-1000005
JSON object: View
NVD Information
Status : Modified
Published: 2018-01-24T22:29:00.307
Modified: 2019-06-18T22:15:11.153
Link: CVE-2018-1000005
JSON object: View
Redhat Information
No data.
CWE