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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 15:06:06 +0100
commit57138de0fc1730c8e14d19b784f1f0573fb03080 (patch)
tree40b8673bb300a58b26253d3d20031eec07b1f8ec /meta/recipes-devtools/perl/perl-5.14.3
parent57a806cc32051ce0d749ba013f55f300d981dc75 (diff)
downloadpoky-57138de0fc1730c8e14d19b784f1f0573fb03080.tar.gz
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 <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/perl-5.14.3')
-rw-r--r--meta/recipes-devtools/perl/perl-5.14.3/perl-5.14.3-fix-CVE-2010-4777.patch45
1 files changed, 45 insertions, 0 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 @@
1perl:fix for CVE-2010-4777
2
3Upstream-Status: Backport
4
5The Perl_reg_numbered_buff_fetch function in Perl 5.10.0, 5.12.0,
65.14.0, and other versions, when running with debugging enabled,
7allows context-dependent attackers to cause a denial of service
8(assertion failure and application exit) via crafted input that
9is not properly handled when using certain regular expressions,
10as demonstrated by causing SpamAssassin and OCSInventory to
11crash.
12
13http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2010-4777
14
15Signed-off-by: yanjun.zhu <yanjun.zhu@windriver.com>
16--- a/regcomp.c
17+++ b/regcomp.c
18@@ -11868,8 +11868,25 @@ Perl_save_re_context(pTHX)
19
20 if (gvp) {
21 GV * const gv = *gvp;
22- if (SvTYPE(gv) == SVt_PVGV && GvSV(gv))
23- save_scalar(gv);
24+ if (SvTYPE(gv) == SVt_PVGV && GvSV(gv)) {
25+ /* this is a copy of save_scalar() without the GETMAGIC call, RT#76538 */
26+ SV ** const sptr = &GvSVn(gv);
27+ SV * osv = *sptr;
28+ SV * nsv = newSV(0);
29+ save_pushptrptr(SvREFCNT_inc_simple(gv),
30+ SvREFCNT_inc(osv), SAVEt_SV);
31+ if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) &&
32+ SvTYPE(osv) != SVt_PVGV) {
33+ if (SvGMAGICAL(osv)) {
34+ const bool oldtainted = PL_tainted;
35+ SvFLAGS(osv) |= (SvFLAGS(osv) &
36+ (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
37+ PL_tainted = oldtainted;
38+ }
39+ mg_localize(osv, nsv, 1);
40+ }
41+ *sptr = nsv;
42+ }
43 }
44 }
45 }