From 57138de0fc1730c8e14d19b784f1f0573fb03080 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) (From OE-Core rev: 73aff6efb3374427234a3615ffca07874f22f3fa) 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 ++++++++++++++++++++++ 1 file changed, 45 insertions(+) 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/perl-5.14.3/perl-5.14.3-fix-CVE-2010-4777.patch') 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; ++ } + } + } + } -- cgit v1.2.3-54-g00ecf