CVE-2018-1000005
Vulnerability from cvelistv5
Published
2018-01-24 22:00
Modified
2024-08-05 12:33
Severity ?
Summary
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
cve@mitre.orghttp://www.securitytracker.com/id/1040273Third Party Advisory, VDB Entry
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2019:1543
cve@mitre.orghttps://curl.haxx.se/docs/adv_2018-824a.htmlPatch, Vendor Advisory
cve@mitre.orghttps://github.com/curl/curl/pull/2231Issue Tracking, Patch, Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3554-1/Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2018/dsa-4098Third Party Advisory
Impacted products
n/an/a
Show details on NVD website

To clipboard 

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}


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