[12560] 2018-04-07_影响所有Windows版本远程桌面(RDP)应用的CredSSP漏洞分析

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2018-04-07_影响所有Windows版本远程桌面(RDP)应用的CredSSP漏洞分析 W i n d o w s R D P C r e d S S P c l o u d s   F r e e B u f   2 0 1 8 - 0 4 - 0 7 3 1 3 P r e e m p t W i n d o w s C r e d S S P C V E - 2 0 1 8 - 0 8 8 6 R C E W i n d o w s R S A   C r e d S S P R D P W i n R M P o w e r s h e l l C r e d S S P P r e e m p t R D P R D P R D P W i n d o w s A c t i v e   D i r e c t o r y K e r b e r o s N T L M M S - R D P S S P I
B u g # 1 C r e d S S P C V E - 2 0 1 7 - 8 5 6 3   R D P N T L M T L S R D P N T L M   ( C r e d S S P ) T L S 使 C r e d S S P C r e d S S P R D P N L A K e r b e r o s 4 C A   K e r b e r o s M i c r o s o f t 3 K e r b e r o s M S - R D P 3 使 B u g 1 B u g 2 B u g 1 C r e d S S P B u g 2 C r e d S S P M S - R D P T S R e q u e s t S P N E G O C r e d S S P / 1 T L S C r e d S S P
a c c e p t _ c o m p l e t e N L T M   /   K e r b e r o s 使 S S P I R S A N e C h a n n e l   B i n d i n g T L S W i n d o w s   W i n d o w s B u g 2 B u g # 2 B u g C P A S S P I C r e d S S P 使 R S A   R S A W i n d o w s W i n d o w s S S P I R S A
R S A R S A N N N φ ( N ) a φ ( N ) N 1 a b 1 ( m o d N ) R S A N p φ ( p ) = p   - 1 N p q φ ( N ) = ( p - 1 ) ( q - 1 ) a N b 使 a b 1 ( m o d N ) N φ ( N ) e 使 c   = m ^ e * m o d   N R S A R S A m c   =   m ^ e   m o d   N m c N e c N d c p q p q N = p × q φ ( N ) = ( p - 1 ) ( q - 1 ) φ ( N ) 1 φ ( N ) φ ( n ) e e d 1 ( m o d φ ( N ) ) d N d R S A R S A O p e n S S L N k π x 1 N k k N 6 0 0 2 6 0 0 * 8 1 / 3 3 2 8 1 / 2 6 5 1 2 1 6 5 0 7 0
A S N . 1 . 8 N T L M   o r   K e r b e r o s N T L M K e r b e r o s S S P I N T L M K e r b e r o s S P N E G O 0 N T L M K e r b e r o s R P C R G S S A P I N T L M R P C N T L M N T L M N T L M K e r b e r o s R D P K e r b e r o s K e r b e r o s C P A 使 使 S P N E G O
A S N . 1 8 N T L M N T L M M S R P C M S R P C M I D L M S R P C R e f e r e n t I d 8 6 4 8 R P C T a s k   S c h e d u l e r   I n t e r f a c e O p n u m   1 T a s k   S c h e d u l e r   I n t e r f a c e W i n d o w s A T S v c A T S v c
A R P W i n d o w s R P C 广 W i n d o w s R P C M S R P C P a y l o a d T a s k   S c h e d u l e r   I n t e r f a c e M S - R D P R P C M I T M 1 0 0 B l a c k H a t A s i a   * p r e e m p t F r e e B u f c l o u d s F r e e B u f . C O M

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