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fix integer underflow in laslog (#706321)

This commit is contained in:
Peter Vrabec 2011-05-31 10:00:39 +02:00
parent 5d7612da5b
commit 6e8f608032
2 changed files with 22 additions and 4 deletions
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21
shadow-4.1.4.2-underflow.patch
View File

@ -1,6 +1,6 @@
diff -up shadow-4.1.4.2/src/faillog.c.overflow shadow-4.1.4.2/src/faillog.c
--- shadow-4.1.4.2/src/faillog.c.overflow 2010-06-14 10:40:28.023030897 +0200
+++ shadow-4.1.4.2/src/faillog.c 2010-06-14 10:53:10.884034750 +0200
diff -up shadow-4.1.4.3/src/faillog.c.underflow shadow-4.1.4.3/src/faillog.c
--- shadow-4.1.4.3/src/faillog.c.underflow 2011-02-13 12:58:16.000000000 -0500
+++ shadow-4.1.4.3/src/faillog.c 2011-05-30 17:48:55.000000000 -0400
@@ -106,8 +106,8 @@ static void print_one (/*@null@*/const s
return;
}
@ -41,3 +41,18 @@ diff -up shadow-4.1.4.2/src/faillog.c.overflow shadow-4.1.4.2/src/faillog.c
/* fseeko errors are not really relevant for us. */
int err = fseeko (fail, offset, SEEK_SET);
assert (0 == err);
diff -up shadow-4.1.4.3/src/lastlog.c.underflow shadow-4.1.4.3/src/lastlog.c
--- shadow-4.1.4.3/src/lastlog.c.underflow 2011-05-31 03:52:25.000000000 -0400
+++ shadow-4.1.4.3/src/lastlog.c 2011-05-31 03:53:32.000000000 -0400
@@ -102,9 +102,8 @@ static void print_one (/*@null@*/const s
}
- offset = pw->pw_uid * sizeof (ll);
-
- if (offset <= (statbuf.st_size - sizeof (ll))) {
+ offset = (off_t) pw->pw_uid * sizeof (ll);
+ if (offset + sizeof (ll) <= statbuf.st_size - sizeof (ll)) {
/* fseeko errors are not really relevant for us. */
int err = fseeko (lastlogfile, offset, SEEK_SET);
assert (0 == err);

5
shadow-utils.spec
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@ -1,7 +1,7 @@
Summary: Utilities for managing accounts and shadow password files
Name: shadow-utils
Version: 4.1.4.3
Release: 1%{?dist}
Release: 2%{?dist}
Epoch: 2
URL: http://pkg-shadow.alioth.debian.org/
Source0: ftp://pkg-shadow.alioth.debian.org/pub/pkg-shadow/shadow-%{version}.tar.bz2
@ -200,6 +200,9 @@ rm -rf $RPM_BUILD_ROOT
%{_mandir}/man8/vigr.8*
%changelog
* Tue May 31 2011 Peter Vrabec <pvrabec@redhat.com> - 2:4.1.4.3-2
- fix integer underflow in laslog (#706321)
* Fri May 20 2011 Peter Vrabec <pvrabec@redhat.com> - 2:4.1.4.3-1
- upgrade
- change UID/GID_MIN to #1000