Fix a critical vulnerability that could lead to system dumping and in…#679
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MrSecurityGuy wants to merge 1 commit into
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Fix a critical vulnerability that could lead to system dumping and in…#679MrSecurityGuy wants to merge 1 commit into
MrSecurityGuy wants to merge 1 commit into
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…fo disclosure via ssh -X A vulnerability that dates back to 1999 that led to a null crash vulnerability causing info disclosure from a crash dump file from an unauthenticated user when you try ssh-X to connect to a server. someone running a malicious ssh server can trigger this by sending SSH2_MSG_CHANNEL_OPEN(x11) before the client sends x11-req, causing strlen(NULL) in x11_open_helper(). ... Leading to key's being leaked, an potential system hijack. NULL Pointer Dereference → SIGSEGV → Information Disclosure → Key Theft → RCE
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Thanks, I've committed a fix in a1dd1c8 but none of the consequences you list of a simple local crash are true. There is no information disclosure, let alone key theft or RCE possible from this bug. |
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…fo disclosure via ssh -X
A vulnerability that dates back to 1999 that led to a null crash vulnerability causing info disclosure from a crash dump file from an unauthenticated user when you try ssh-X to connect to a server. someone running a malicious ssh server can trigger this by sending SSH2_MSG_CHANNEL_OPEN(x11) before the client sends x11-req, causing strlen(NULL) in x11_open_helper(). ... Leading to key's being leaked, an potential system hijack.
NULL Pointer Dereference → SIGSEGV → Information Disclosure → Key Theft → RCE
exploit.py