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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-9226 from the MITRE CVE dictionary dictionary and NIST NVD.
CVSS3 Base Score | 4.8 |
---|---|
CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L |
Attack Vector | Network |
Attack Complexity | High |
Privileges Required | None |
User Interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity Impact | Low |
Availability Impact | Low |
Platform | Errata | Release Date |
---|---|---|
Red Hat Software Collections for Red Hat Enterprise Linux 6 (rh-php70-php) | RHSA-2018:1296 | 2018-05-03 |
Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-php70-php) | RHSA-2018:1296 | 2018-05-03 |
Platform | Package | State |
---|---|---|
Red Hat Subscription Asset Manager 1 | ruby193-ruby | Will not fix |
Red Hat Software Collections for Red Hat Enterprise Linux | rh-ruby23-ruby | Will not fix |
Red Hat Software Collections for Red Hat Enterprise Linux | rh-ruby22-ruby | Will not fix |
Red Hat Software Collections for Red Hat Enterprise Linux | rh-ruby24-ruby | Will not fix |
Red Hat Software Collections for Red Hat Enterprise Linux | rh-php56-php | Will not fix |
Red Hat Enterprise Linux 7 | php | Will not fix |
Red Hat Enterprise Linux 7 | ruby | Will not fix |
Red Hat Enterprise Linux 6 | oniguruma | Will not fix |
Red Hat Enterprise Linux 6 | php | Will not fix |
Red Hat Enterprise Linux 6 | ruby | Will not fix |
Red Hat Enterprise Linux 5 | php53 | Will not fix |
Red Hat Enterprise Linux 5 | php | Will not fix |
Red Hat Enterprise Linux 5 | ruby | Will not fix |