C-Kermit 6.0.192 before 11.1.515 contains a buffer overflow vulnerability in tn_snenv() in ckctel.c that allows malicious Telnet servers to corrupt…
C-Kermit 6.0.192 before 11.1.515 contains a buffer overflow vulnerability in tn_snenv() in ckctel.c that allows malicious Telnet servers to corrupt client memory via crafted NEW-ENVIRON SEND subnegotiation. Malicious or machine-in-the-middle servers can send oversized variable names before authentication, overflowing a 16-byte stack buffer and a miscomputed heap buffer to corrupt stack and heap memory.
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- OpenKermit
- Product
- C-Kermit
- CVSS v3.1
- 7.5 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness
- CWE-787
- NVD status
- Received
Why it ranks 25 (Notable)
- CVSS v3.1 7.5 high
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.