Important: oniguruma

Issue Overview:

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-2017-9226)

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 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-2017-9227)

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 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-2017-9228)

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 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. (CVE-2017-9229)

Affected Packages:

oniguruma

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update oniguruma to update your system.

New Packages:

aarch64:  
    oniguruma-5.9.6-1.amzn2.0.7.aarch64  
    oniguruma-devel-5.9.6-1.amzn2.0.7.aarch64  
    oniguruma-debuginfo-5.9.6-1.amzn2.0.7.aarch64  
  
i686:  
    oniguruma-5.9.6-1.amzn2.0.7.i686  
    oniguruma-devel-5.9.6-1.amzn2.0.7.i686  
    oniguruma-debuginfo-5.9.6-1.amzn2.0.7.i686  
  
src:  
    oniguruma-5.9.6-1.amzn2.0.7.src  
  
x86_64:  
    oniguruma-5.9.6-1.amzn2.0.7.x86_64  
    oniguruma-devel-5.9.6-1.amzn2.0.7.x86_64  
    oniguruma-debuginfo-5.9.6-1.amzn2.0.7.x86_64  

Additional References

Red Hat: CVE-2017-9226, CVE-2017-9227, CVE-2017-9228, CVE-2017-9229

Mitre: CVE-2017-9226, CVE-2017-9227, CVE-2017-9228, CVE-2017-9229