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| author | Tatsuya Kinoshita <tats@debian.org> | 2016-11-21 13:52:38 +0000 |
|---|---|---|
| committer | Tatsuya Kinoshita <tats@debian.org> | 2016-11-21 14:03:33 +0000 |
| commit | 193c217dabdb4d29ecb44af8d7e3f91bfd84e851 (patch) | |
| tree | 33b2f145d8dbb8724c9b144138fea486b0f1b7d7 /debian/patches/907_iso2022.patch | |
| parent | New patch 906_form-update.patch to fix bcopy size [CVE-2016-9432] (diff) | |
| download | w3m-193c217dabdb4d29ecb44af8d7e3f91bfd84e851.tar.gz w3m-193c217dabdb4d29ecb44af8d7e3f91bfd84e851.zip | |
New patch 907_iso2022.patch to fix array index [CVE-2016-9433]
Diffstat (limited to '')
| -rw-r--r-- | debian/patches/907_iso2022.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/debian/patches/907_iso2022.patch b/debian/patches/907_iso2022.patch new file mode 100644 index 0000000..60fa173 --- /dev/null +++ b/debian/patches/907_iso2022.patch @@ -0,0 +1,63 @@ +Subject: Prevent segfault when iso2022 parsing +Author: Tatsuya Kinoshita <tats@debian.org> +Bug-Debian: https://github.com/tats/w3m/issues/14 [CVE-2016-9433] +Origin: https://anonscm.debian.org/cgit/collab-maint/w3m.git/commit/?id=9cf6926c5d947371dc9e44f32bc7a2fbfca5d469 + +diff --git a/libwc/iso2022.c b/libwc/iso2022.c +index 33d9a19..59f35de 100644 +--- a/libwc/iso2022.c ++++ b/libwc/iso2022.c +@@ -405,7 +405,8 @@ wc_push_to_iso2022(Str os, wc_wchar_t cc, wc_status *st) + case WC_CCS_A_CS94: + if (cc.ccs == WC_CCS_US_ASCII) + cc.ccs = st->g0_ccs; +- g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; ++ if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE) ++ g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; + break; + case WC_CCS_A_CS94W: + is_wide = 1; +@@ -435,31 +436,37 @@ wc_push_to_iso2022(Str os, wc_wchar_t cc, wc_status *st) + break; + #endif + } +- g = cs94w_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; ++ if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE) ++ g = cs94w_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; + break; + case WC_CCS_A_CS96: +- g = cs96_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; ++ if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE) ++ g = cs96_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; + break; + case WC_CCS_A_CS96W: + is_wide = 1; +- g = cs96w_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; ++ if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE) ++ g = cs96w_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; + break; + case WC_CCS_A_CS942: +- g = cs942_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; ++ if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE) ++ g = cs942_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; + break; + case WC_CCS_A_UNKNOWN_W: + if (WcOption.no_replace) + return; + is_wide = 1; + cc.ccs = WC_CCS_US_ASCII; +- g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; ++ if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE) ++ g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; + cc.code = ((wc_uint32)WC_REPLACE_W[0] << 8) | WC_REPLACE_W[1]; + break; + case WC_CCS_A_UNKNOWN: + if (WcOption.no_replace) + return; + cc.ccs = WC_CCS_US_ASCII; +- g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; ++ if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE) ++ g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE]; + cc.code = (wc_uint32)WC_REPLACE[0]; + break; + default: |