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HIGH

curl: URL file scheme drive letter buffer overflow

Published Jun 14, 2017

Description

In curl before 7.54.1 on Windows and DOS, libcurl's default protocol function, which is the logic that allows an application to set which protocol libcurl should attempt to use when given a URL without a scheme part, had a flaw that could lead to it overwriting a heap based memory buffer with seven bytes. If the default protocol is specified to be FILE or a file: URL lacks two slashes, the given "URL" starts with a drive letter, and libcurl is built for Windows or DOS, then libcurl would copy the path 7 bytes off, so that the end of the given path would write beyond the malloc buffer (7 bytes being the length in bytes of the ascii string "file://").

Affected products

Remediation

No remediation recorded yet.

Metrics

References (8)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 14, 2017
Updated Aug 5, 2024
Reserved Jun 7, 2017
NVD
Status Modified
Modified Jun 17, 2026
Red Hat
Severity Moderate
Public date Jun 14, 2017