Bug 2573237 (CVE-2026-129121)

Summary: CVE-2026-129121 ckermit: ckermit: Arbitrary file overwrite via path traversal during recursive FTP retrieval
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in C-Kermit. A malicious File Transfer Protocol (FTP) server can exploit a path traversal vulnerability by returning crafted file paths containing directory traversal sequences or absolute paths during recursive file download operations. This flaw allows the rogue server to overwrite arbitrary files outside the intended directory on the client system, potentially leading to arbitrary code execution.
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Description OSIDB Bzimport 2026-11-13 16:31:41 UTC
C-Kermit 8.0.200 before 11.1.515 contains a path traversal vulnerability in doftpget() in ckcftp.c that allows malicious FTP servers to write files outside the intended directory. Attackers can return absolute paths, tilde names, or dot-dot components in NLST or MLSD listings during MGET /RECURSIVE to overwrite files like .bashrc, leading to code execution.