system/freebsd-src
system/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src synced 2024-07-21 10:19:04 +00:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

MFV r320905: Import upstream fix for CVE-2017-11103.

Browse source 
In _krb5_extract_ticket() the KDC-REP service name must be obtained from
encrypted version stored in 'enc_part' instead of the unencrypted version
stored in 'ticket'.  Use of the unecrypted version provides an
opportunity for successful server impersonation and other attacks.

Submitted by:	hrs
Obtained from:	Heimdal
Security:	FreeBSD-SA-17:05.heimdal
Security:	CVE-2017-11103
This commit is contained in:
Xin LI 2017-07-12 07:19:06 +00:00
parent a8d7b9d3bb f52d4664e3
commit 49426905b3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=320906
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
crypto/heimdal/lib/krb5/ticket.c
View file

@ -713,8 +713,8 @@ _krb5_extract_ticket(krb5_context context,
/* check server referral and save principal */
ret = _krb5_principalname2krb5_principal (context,
&tmp_principal,
rep->kdc_rep.ticket.sname,
rep->kdc_rep.ticket.realm);
rep->enc_part.sname,
rep->enc_part.srealm);
if (ret)
goto out;
if((flags & EXTRACT_TICKET_ALLOW_SERVER_MISMATCH) == 0){