From 73aff6efb3374427234a3615ffca07874f22f3fa 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 (From OE-Core rev: 368df9f13ddf124e6aaaec06c02ab698c9e0b6c3) Signed-off-by: yanjun.zhu Signed-off-by: Roy Li Signed-off-by: Saul Wold Signed-off-by: Richard Purdie --- .../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/perl') 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-${PV}.tar.gz \ file://MM_Unix.pm.patch \ file://debian/errno_ver.diff \ file://dynaloaderhack.patch \ - file://perl-build-in-t-dir.patch" + file://perl-build-in-t-dir.patch \ + file://perl-5.14.3-fix-CVE-2010-4777.patch " SRC_URI[md5sum] = "f6a3d878c688d111b495c87db56c5be5" SRC_URI[sha256sum] = "03638a4f01bc26b81231233671524b4163849a3a9ea5cc2397293080c4ea339f" diff --git a/meta/recipes-devtools/perl/perl_5.14.3.bb b/meta/recipes-devtools/perl/perl_5.14.3.bb index 09a3f3b531..6816382345 100644 --- a/meta/recipes-devtools/perl/perl_5.14.3.bb +++ b/meta/recipes-devtools/perl/perl_5.14.3.bb @@ -74,7 +74,8 @@ SRC_URI = "http://www.cpan.org/src/5.0/perl-${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" -- cgit 1.2.3-korg