CVE-2017-1000257 (GCVE-0-2017-1000257)

Vulnerability from cvelistv5 – Published: 2017-10-31 21:00 – Updated: 2024-08-05 22:00
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
References
https://curl.haxx.se/docs/adv_20171023.html x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2017:3263 vendor-advisoryx_refsource_REDHAT
https://security.gentoo.org/glsa/201712-04 vendor-advisoryx_refsource_GENTOO
http://www.securitytracker.com/id/1039644 vdb-entryx_refsource_SECTRACK
https://access.redhat.com/errata/RHSA-2018:3558 vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/101519 vdb-entryx_refsource_BID
http://www.debian.org/security/2017/dsa-4007 vendor-advisoryx_refsource_DEBIAN
https://access.redhat.com/errata/RHSA-2018:2486 vendor-advisoryx_refsource_REDHAT
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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