CVE-2020-12062

01/תיאור (מקור, אנגלית)

The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory anywhere on the remote server. The victim must use the command scp -rp to download a file hierarchy containing, anywhere inside, this crafted subdirectory. NOTE: the vendor points out that "this attack can achieve no more than a hostile peer is already able to achieve within the scp protocol" and "utimes does not fail under normal circumstances.

02/מוצרים מושפעים

openbsd: openssh

03/קישורים9

• www.openssh.com/txt/release-8.3 Release NotesVendor Advisory
• www.openssh.com/txt/release-8.3 Release NotesVendor Advisory
• github.com/openssh/openssh-portable/commit/955854cafca88e0cdcd‮… PatchThird Party Advisory
• github.com/openssh/openssh-portable/commit/955854cafca88e0cdcd‮… PatchThird Party Advisory
• github.com/openssh/openssh-portable/commit/aad87b88fc2536b1ea0‮… Third Party Advisory
• www.openwall.com/lists/oss-security/2020/05/27/1 Mailing ListRelease NotesThird Party Advisory
• github.com/openssh/openssh-portable/commit/aad87b88fc2536b1ea0‮… Third Party Advisory
• www.openwall.com/lists/oss-security/2020/05/27/1 Mailing ListRelease NotesThird Party Advisory
• cert-portal.siemens.com/productcert/html/ssa-398330.html