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CVE-2017-1000100
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CVE-2017-1000100
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
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 endto() 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.
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CVSS V3 Severity and Metrics
General Information
Vendors
Products
- libcurl 7.15.0,
- libcurl 7.15.1,
- libcurl 7.15.2,
- libcurl 7.15.3,
- libcurl 7.15.4,
- libcurl 7.15.5,
- libcurl 7.16.0,
- libcurl 7.16.1,
- libcurl 7.16.2,
- libcurl 7.16.3,
- libcurl 7.16.4,
- libcurl 7.17.0,
- libcurl 7.17.1,
- libcurl 7.18.0,
- libcurl 7.18.1,
- libcurl 7.18.2,
- libcurl 7.19.0,
- libcurl 7.19.1,
- libcurl 7.19.2,
- libcurl 7.19.3,
- libcurl 7.19.4,
- libcurl 7.19.5,
- libcurl 7.19.6,
- libcurl 7.19.7,
- libcurl 7.20.0,
- libcurl 7.20.1,
- libcurl 7.21.0,
- libcurl 7.21.1,
- libcurl 7.21.2,
- libcurl 7.21.3,
- libcurl 7.21.4,
- libcurl 7.21.5,
- libcurl 7.21.6,
- libcurl 7.21.7,
- libcurl 7.22.0,
- libcurl 7.23.0,
- libcurl 7.23.1,
- libcurl 7.24.0,
- libcurl 7.25.0,
- libcurl 7.26.0,
- libcurl 7.27.0,
- libcurl 7.28.0,
- libcurl 7.28.1,
- libcurl 7.29.0,
- libcurl 7.30.0,
- libcurl 7.31.0,
- libcurl 7.32.0,
- libcurl 7.33.0,
- libcurl 7.34.0,
- libcurl 7.35.0,
- libcurl 7.36.0,
- libcurl 7.37.0,
- libcurl 7.37.1,
- libcurl 7.38.0,
- libcurl 7.39,
- libcurl 7.40.0,
- libcurl 7.41.0,
- libcurl 7.42.0,
- libcurl 7.42.1,
- libcurl 7.43.0,
- libcurl 7.44.0,
- libcurl 7.45.0,
- libcurl 7.46.0,
- libcurl 7.47.0,
- libcurl 7.47.1,
- libcurl 7.48.0,
- libcurl 7.49.0,
- libcurl 7.49.1,
- libcurl 7.50.0,
- libcurl 7.50.1,
- libcurl 7.50.2,
- libcurl 7.50.3,
- libcurl 7.51.0,
- libcurl 7.52.0,
- libcurl 7.52.1,
- libcurl 7.53.0,
- libcurl 7.53.1,
- libcurl 7.54.0,
- libcurl 7.54.1
References
Advisory
Additional Info
Technical Analysis
Report as Emergent Threat Response
Report as Zero-day Exploit
Report as Exploited in the Wild
CVE ID
AttackerKB requires a CVE ID in order to pull vulnerability data and references from the CVE list and the National Vulnerability Database. If available, please supply below:
