Bug 1478310 (CVE-2017-1000100) - CVE-2017-1000100 curl: TFTP sends more than buffer size
Summary: CVE-2017-1000100 curl: TFTP sends more than buffer size
Keywords:
Status: NEW
Alias: CVE-2017-1000100
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1479668 1479669 1479670
Blocks: 1478321
TreeView+ depends on / blocked
 
Reported: 2017-08-04 09:27 UTC by Adam Mariš
Modified: 2019-09-29 14:18 UTC (History)
20 users (show)

Fixed In Version: curl 7.55.0
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed:


Attachments (Terms of Use)
Upstream patch (1.72 KB, patch)
2017-08-04 09:45 UTC, Adam Mariš
no flags Details | Diff


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:3558 None None None 2018-11-13 08:34:40 UTC

Description Adam Mariš 2017-08-04 09:27:54 UTC
When doing an TFTP upload and curl/libcurl is given a URL that contains a very
long file name (longer than about 515 bytes), the file name is truncated to
fit within the buffer boundaries, but the buffer size is still wrongly updated
to use the untruncated length. This too large value is then used in the
`send()` call, making curl attempt to send more data than what is actually put
into the buffer. The `send()` function will then read beyond the end of the
heap based buffer.

Affected versions: libcurl 7.15.0 to and including 7.54.1

Comment 1 Adam Mariš 2017-08-04 09:28:05 UTC
Acknowledgments:

Name: the Curl project
Upstream: Even Rouault

Comment 3 Adam Mariš 2017-08-04 09:45:02 UTC
Created attachment 1308973 [details]
Upstream patch

Comment 4 Doran Moppert 2017-08-07 03:45:50 UTC
Statement:

Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

Comment 5 Andrej Nemec 2017-08-09 06:22:48 UTC
External References:

https://curl.haxx.se/docs/adv_20170809B.html

Comment 6 Andrej Nemec 2017-08-09 06:31:37 UTC
Created curl tracking bugs for this issue:

Affects: fedora-all [bug 1479670]


Created mingw-curl tracking bugs for this issue:

Affects: epel-7 [bug 1479668]
Affects: fedora-all [bug 1479669]

Comment 7 errata-xmlrpc 2018-11-13 08:34:30 UTC
This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS

Via RHSA-2018:3558 https://access.redhat.com/errata/RHSA-2018:3558


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