CVE-2018-1000005

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.

Link	Resource
https://github.com/curl/curl/pull/2231	Issue Tracking Patch
https://curl.haxx.se/docs/adv_2018-824a.html	Patch Vendor Advisory
http://www.securitytracker.com/id/1040273	Third Party Advisory VDB Entry
https://www.debian.org/security/2018/dsa-4098	Third Party Advisory
https://usn.ubuntu.com/3554-1/	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1543

Configuration 1

cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*

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Published : 2018-01-24 10:29

Updated : 2019-06-18 10:15

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NVD link : CVE-2018-1000005

Mitre link : CVE-2018-1000005

No products.

CWE-125

Out-of-bounds Read