Hash: SHA512

Package        : libonig
Version        : 5.9.1-1+deb7u1
CVE ID         : CVE-2017-9224 CVE-2017-9226 CVE-2017-9227 CVE-2017-9228
                  CVE-2017-9229
Debian Bug     : 863312 863314 863315 863316 863318

CVE-2017-9224

     An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in
     Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack
     out-of-bounds read occurs in match_at() during regular expression
     searching. A logical error involving order of validation and access in
     match_at() could result in an out-of-bounds read from a stack buffer.

CVE-2017-9226

     An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in
     Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A heap
     out-of-bounds write or read occurs in next_state_val() during regular
     expression compilation. Octal numbers larger than 0xff are not handled
     correctly in fetch_token() and fetch_token_in_cc(). A malformed regular
     expression containing an octal number in the form of '\700' would
     produce an invalid code point value larger than 0xff in
     next_state_val(), resulting in an out-of-bounds write memory
     corruption.

CVE-2017-9227

     An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in
     Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack
     out-of-bounds read occurs in mbc_enc_len() during regular expression
     searching. Invalid handling of reg->dmin in forward_search_range()
     could result in an invalid pointer dereference, as an out-of-bounds
     read from a stack buffer.

CVE-2017-9228

     An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in
     Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A heap
     out-of-bounds write occurs in bitset_set_range() during regular
     expression compilation due to an uninitialized variable from an
     incorrect state transition. An incorrect state transition in
     parse_char_class() could create an execution path that leaves a
     critical local variable uninitialized until it's used as an index,
     resulting in an out-of-bounds write memory corruption.

CVE-2017-9229

     An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in
     Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A SIGSEGV occurs
     in left_adjust_char_head() during regular expression compilation.
     Invalid handling of reg->dmax in forward_search_range() could result in
     an invalid pointer dereference, normally as an immediate
     denial-of-service condition.



For Debian 7 "Wheezy", these problems have been fixed in version
5.9.1-1+deb7u1.

We recommend that you upgrade your libonig packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS