Out-of-Bounds Affecting curl package, versions <7.56.1-r0
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Test your applications- Snyk ID SNYK-ALPINE316-CURL-2841973
- published 31 Oct 2017
- disclosed 31 Oct 2017
Introduced: 31 Oct 2017
CVE-2017-1000257 Open this link in a new tabHow to fix?
Upgrade Alpine:3.16
curl
to version 7.56.1-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream curl
package and not the curl
package as distributed by Alpine
.
See How to fix?
for Alpine:3.16
relevant fixed versions and status.
An IMAP FETCH response line indicates the size of the returned data, in number of bytes. When that response says the data is zero bytes, libcurl would pass on that (non-existing) data with a pointer and the size (zero) to the deliver-data function. libcurl's deliver-data function treats zero as a magic number and invokes strlen() on the data to figure out the length. The strlen() is called on a heap based buffer that might not be zero terminated so libcurl might read beyond the end of it into whatever memory lies after (or just crash) and then deliver that to the application as if it was actually downloaded.
References
- https://curl.haxx.se/docs/adv_20171023.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000257
- http://www.debian.org/security/2017/dsa-4007
- https://security-tracker.debian.org/tracker/CVE-2017-1000257
- https://security.gentoo.org/glsa/201712-04
- https://access.redhat.com/errata/RHSA-2017:3263
- https://access.redhat.com/errata/RHSA-2018:2486
- https://access.redhat.com/errata/RHSA-2018:3558
- http://www.securityfocus.com/bid/101519
- http://www.securitytracker.com/id/1039644
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-1000257