Information disclosure in Haxx Libcurl
CVE-2017-1000099
When asking to get a file from a file:// URL, libcurl provides a feature that outputs meta-data about the file using HTTP-like headers. The code doing this would send the wrong buffer to the user (stdout or the application's provide callback), which could lead to other private data from the heap to get inadvertently displayed. The wrong buffer was an uninitialized memory area allocated on the heap and if it turned out to not contain any zero byte, it would continue and display the data following that buffer in memory.
Vulnerability class: Information Disclosure
EPSS: 0.031 (86.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
Affected products
- Haxx Libcurl — versions 7.54.1
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (vendor-advisory, Patch, VDB Entry, Third Party Advisory, x_refsource_GENTOO)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Vendor Advisory)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- nvd@nist.gov (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-1000099?
- CVE-2017-1000099 is a medium-severity vulnerability in Haxx Libcurl, classified under Information Disclosure. CVSS score: 6.5/10. Published 2017-10-05.
- How severe is CVE-2017-1000099?
- Medium severity. CVSS v3 base score is 6.5 out of 10.