Risk | High |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2020-26159 |
CWE-ID | CWE-787 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Oniguruma Universal components / Libraries / Libraries used by multiple products |
Vendor | K.Kosako |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU47647
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-26159
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
In Oniguruma 6.9.5_rev1, an attacker able to supply a regular expression for compilation may be able to overflow a buffer by one byte in concat_opt_exact_str in src/regcomp.c .
MitigationInstall update from vendor's website.
Vulnerable software versionsOniguruma: 6.9.5
External linkshttp://www.openwall.com/lists/oss-security/2020/09/30/7
http://github.com/kkos/oniguruma/commit/cbe9f8bd9cfc6c3c87a60fbae58fa1a85db59df0
http://github.com/kkos/oniguruma/issues/207
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2ZCUPCKJNSUHQMXXZBRNDDGQQLBJ2ACT/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4NHVR7X5ZLXUGW3PBCPQMNFQ3OJCSMQD/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZFUJY7BUIFBTZ3IUHVHCID4JYCRDGKPS/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.