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authoryanjun.zhu <yanjun.zhu@windriver.com>2014-05-20 09:27:47 +0800
committerRichard Purdie <richard.purdie@linuxfoundation.org>2014-10-10 15:05:52 +0100
commit73aff6efb3374427234a3615ffca07874f22f3fa (patch)
tree609f7f1acc7c9bfc60c57713541e4a729dc3d2ae /meta/recipes-devtools/perl
parent8b9164029153fa06520bd5b6349245c2ac1f605f (diff)
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perl: fix for CVE-2010-4777
The Perl_reg_numbered_buff_fetch function in Perl 5.10.0, 5.12.0, 5.14.0, and other versions, when running with debugging enabled, allows context-dependent attackers to cause a denial of service (assertion failure and application exit) via crafted input that is not properly handled when using certain regular expressions, as demonstrated by causing SpamAssassin and OCSInventory to crash. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2010-4777 (From OE-Core rev: 368df9f13ddf124e6aaaec06c02ab698c9e0b6c3) Signed-off-by: yanjun.zhu <yanjun.zhu@windriver.com> Signed-off-by: Roy Li <rongqing.li@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-devtools/perl')
-rw-r--r--meta/recipes-devtools/perl/perl-5.14.3/perl-5.14.3-fix-CVE-2010-4777.patch45
-rw-r--r--meta/recipes-devtools/perl/perl-native_5.14.3.bb3
-rw-r--r--meta/recipes-devtools/perl/perl_5.14.3.bb3
3 files changed, 49 insertions, 2 deletions
diff --git a/meta/recipes-devtools/perl/perl-5.14.3/perl-5.14.3-fix-CVE-2010-4777.patch b/meta/recipes-devtools/perl/perl-5.14.3/perl-5.14.3-fix-CVE-2010-4777.patch
new file mode 100644
index 0000000000..e0dcf412bb
--- /dev/null
+++ b/meta/recipes-devtools/perl/perl-5.14.3/perl-5.14.3-fix-CVE-2010-4777.patch
@@ -0,0 +1,45 @@
+perl:fix for CVE-2010-4777
+
+Upstream-Status: Backport
+
+The Perl_reg_numbered_buff_fetch function in Perl 5.10.0, 5.12.0,
+5.14.0, and other versions, when running with debugging enabled,
+allows context-dependent attackers to cause a denial of service
+(assertion failure and application exit) via crafted input that
+is not properly handled when using certain regular expressions,
+as demonstrated by causing SpamAssassin and OCSInventory to
+crash.
+
+http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2010-4777
+
+Signed-off-by: yanjun.zhu <yanjun.zhu@windriver.com>
+--- a/regcomp.c
++++ b/regcomp.c
+@@ -11868,8 +11868,25 @@ Perl_save_re_context(pTHX)
+
+ if (gvp) {
+ GV * const gv = *gvp;
+- if (SvTYPE(gv) == SVt_PVGV && GvSV(gv))
+- save_scalar(gv);
++ if (SvTYPE(gv) == SVt_PVGV && GvSV(gv)) {
++ /* this is a copy of save_scalar() without the GETMAGIC call, RT#76538 */
++ SV ** const sptr = &GvSVn(gv);
++ SV * osv = *sptr;
++ SV * nsv = newSV(0);
++ save_pushptrptr(SvREFCNT_inc_simple(gv),
++ SvREFCNT_inc(osv), SAVEt_SV);
++ if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) &&
++ SvTYPE(osv) != SVt_PVGV) {
++ if (SvGMAGICAL(osv)) {
++ const bool oldtainted = PL_tainted;
++ SvFLAGS(osv) |= (SvFLAGS(osv) &
++ (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
++ PL_tainted = oldtainted;
++ }
++ mg_localize(osv, nsv, 1);
++ }
++ *sptr = nsv;
++ }
+ }
+ }
+ }
diff --git a/meta/recipes-devtools/perl/perl-native_5.14.3.bb b/meta/recipes-devtools/perl/perl-native_5.14.3.bb
index 2ef0a5135c..c38be41d49 100644
--- a/meta/recipes-devtools/perl/perl-native_5.14.3.bb
+++ b/meta/recipes-devtools/perl/perl-native_5.14.3.bb
@@ -17,7 +17,8 @@ SRC_URI = "http://www.cpan.org/src/5.0/perl-${PV}.tar.gz \
file://MM_Unix.pm.patch \
file://debian/errno_ver.diff \
file://dynaloaderhack.patch \
- file://perl-build-in-t-dir.patch"
+ file://perl-build-in-t-dir.patch \
+ file://perl-5.14.3-fix-CVE-2010-4777.patch "
SRC_URI[md5sum] = "f6a3d878c688d111b495c87db56c5be5"
SRC_URI[sha256sum] = "03638a4f01bc26b81231233671524b4163849a3a9ea5cc2397293080c4ea339f"
diff --git a/meta/recipes-devtools/perl/perl_5.14.3.bb b/meta/recipes-devtools/perl/perl_5.14.3.bb
index 09a3f3b531..6816382345 100644
--- a/meta/recipes-devtools/perl/perl_5.14.3.bb
+++ b/meta/recipes-devtools/perl/perl_5.14.3.bb
@@ -74,7 +74,8 @@ SRC_URI = "http://www.cpan.org/src/5.0/perl-${PV}.tar.gz \
file://config.sh-32-be \
file://config.sh-64 \
file://config.sh-64-le \
- file://config.sh-64-be"
+ file://config.sh-64-be \
+ file://perl-5.14.3-fix-CVE-2010-4777.patch "
# file://debian/fakeroot.diff
SRC_URI[md5sum] = "f6a3d878c688d111b495c87db56c5be5"