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SUSE:SLE-12-SP3:GA
libssh2_org.11463
libssh2_org-CVE-2019-3861.patch
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File libssh2_org-CVE-2019-3861.patch of Package libssh2_org.11463
commit b6525c924313f6127287edc945a3a787f9aff158 Author: Michael Buckley <michael@panic.com> Date: Tue Dec 4 12:44:26 2018 -0800 Sanitize padding_length - _libssh2_transport_read(). This prevents an underflow resulting in a potential out-of-bounds read if a server sends a too-large padding_length, possibly with malicious intent. Index: src/transport.c =================================================================== --- src/transport.c.orig +++ src/transport.c @@ -438,6 +438,9 @@ int _libssh2_transport_read(LIBSSH2_SESS return LIBSSH2_ERROR_DECRYPT; p->padding_length = block[4]; + if ( p->padding_length > p->packet_length - 1 ) { + return LIBSSH2_ERROR_DECRYPT; + } if(p->packet_length < 1) { return LIBSSH2_ERROR_DECRYPT; }
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