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Fix crash reading invalid SIDs from passwd and group files

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* grp.cc (pwdgrp::parse_group): Only copy the SID if it's valid.
        * passwd.cc (pwdgrp::parse_passwd): Ditto.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2015-12-16 12:25:27 +01:00
parent 4fbb2eb2c0
commit c7432b13fa
3 changed files with 9 additions and 4 deletions
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4
winsup/cygwin/grp.cc
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@ -48,8 +48,8 @@ pwdgrp::parse_group ()
/* Don't generate gr_mem entries. */
grp.g.gr_mem = &null_ptr;
cygsid csid;
csid.getfromgr_passwd (&grp.g);
RtlCopySid (SECURITY_MAX_SID_SIZE, grp.sid, csid);
if (csid.getfromgr_passwd (&grp.g))
RtlCopySid (SECURITY_MAX_SID_SIZE, grp.sid, csid);
return true;
}