From 368df9f13ddf124e6aaaec06c02ab698c9e0b6c3 Mon Sep 17 00:00:00 2001 From: "yanjun.zhu" Date: Tue, 20 May 2014 09:27:47 +0800 Subject: 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 Signed-off-by: yanjun.zhu Signed-off-by: Roy Li Signed-off-by: Saul Wold --- .../perl-5.14.3-fix-CVE-2010-4777.patch | 45 ++++++++++++++++++++++ meta/recipes-devtools/perl/perl-native_5.14.3.bb | 3 +- meta/recipes-devtools/perl/perl_5.14.3.bb | 3 +- 3 files changed, 49 insertions(+), 2 deletions(-) create mode 100644 meta/recipes-devtools/perl/perl-5.14.3/perl-5.14.3-fix-CVE-2010-4777.patch (limited to 'meta/recipes-devtools') 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 +--- 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-${PV}.tar.gz \ file://MM_Unix.pm.patch \ file://debian/errno_ver.diff \ file://dynaloaderhack.patch \ - file://perl-build-in-t-dir.patch" + file://perl-build-in-t-dir.patch \ + file://perl-5.14.3-fix-CVE-2010-4777.patch " SRC_URI[md5sum] = "f6a3d878c688d111b495c87db56c5be5" SRC_URI[sha256sum] = "03638a4f01bc26b81231233671524b4163849a3a9ea5cc2397293080c4ea339f" diff --git a/meta/recipes-devtools/perl/perl_5.14.3.bb b/meta/recipes-devtools/perl/perl_5.14.3.bb index c307b99fae..fcd665bf34 100644 --- a/meta/recipes-devtools/perl/perl_5.14.3.bb +++ b/meta/recipes-devtools/perl/perl_5.14.3.bb @@ -74,7 +74,8 @@ SRC_URI = "http://www.cpan.org/src/5.0/perl-${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" -- cgit 1.2.3-korg