Home CVE Database CVE-2017-1000100

CVE-2017-1000100

Description

When doing a TFTP transfer 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 sendto() call, making curl attempt to send more data than what is actually put into the buffer. The sendto() function will then read beyond the end of the heap based buffer. A malicious HTTP(S) server could redirect a vulnerable libcurl-using client to a crafted TFTP URL (if the client hasn\'t restricted which protocols it allows redirects to) and trick it to send private memory contents to a remote server over UDP. Limit curl\'s redirect protocols with --proto-redir and libcurl\'s with CURLOPT_REDIR_PROTOCOLS. We are not aware of any exploit of this flaw.

Priority: MEDIUM
CVSS v3: 6.5
Publish Date: Aug 10, 2017
Related ID: --
CVSS v2: Medium
Modified Date: Aug 10, 2017

Find out more about CVE-2017-1000100 from the MITRE-CVE dictionary and NIST NVD


Products Affected

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Product Name Status Defect Fixed Downloads
Linux
Wind River Linux LTS 17 Fixed -- 10.17.41.1 --
Wind River Linux 8 Fixed LIN8-7405
8.0.0.21 --
Wind River Linux 9 Fixed LIN9-5029
9.0.0.10 --
Wind River Linux 7 Fixed -- 7.0.0.26 --
Wind River Linux LTS 21 Not Vulnerable -- -- --
Wind River Linux LTS 18 Fixed -- 10.18.44.1 --
Wind River Linux LTS 19 Not Vulnerable -- -- --
Wind River Linux CD release Not Vulnerable -- -- --
VxWorks
VxWorks 7 Fixed -- webcli_curl-7.55.1.0 --
VxWorks 6.9 Vulnerable -- -- --

Related Products

Product Name Status Defect Fixed Downloads

Comments

curl


Notes
Requires LTSS - customers must have active LTSS (Long Term Security Shield) Support to receive up-to-date information about vulnerabilities that may affect legacy software. Please contact your Wind River account team or see https://docs.windriver.com/bundle/Support_and_Maintenance_Supplemental_Terms_and_Conditions and https://support2.windriver.com/index.php?page=plc for more information.
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