CURL-CVE-2017-7407
Dashboard / Vulnerabilities / CURL-CVE-2017-7407
Summary: --write-out out of buffer read
Details: There were two bugs in curl's parser for the command line option `--write-out` (or `-w` for short) that would skip the end of string zero byte if the string ended in a `%` (percent) or `\` (backslash), and it would read beyond that buffer in the heap memory and it could then potentially output pieces of that memory to the terminal or the target file etc. The curl security team did not report this as a security vulnerability due to the minimal risk: the memory this would output comes from the process the user itself invokes and that runs with the same privileges as the user. We could not come up with a likely scenario where this could leak other users' data or memory contents. An external party registered this as a CVE with MITRE and we feel a responsibility to clarify what this flaw is about. The CVE-2017-7407 issue is specifically only about the `%` part of this flaw. This flaw only exists in the command line tool.
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Type: SEMVER
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