The version of oniguruma installed on the remote host is prior to 5.9.6-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-2311 advisory.

    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)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Amazon Linux 2 : oniguruma (ALAS-2023-2311)

critical Nessus Plugin ID 183484

Version 1.2

Version 1.1

Version 1.0

Version 1.2 Dec 12, 2024, 9:55 AM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202412120955
Version 1.1 Oct 23, 2023, 4:39 PM Exploit attributes ("Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin Feed: 202310231639
Version 1.0 Oct 20, 2023, 1:54 PM New Plugin Feed: 202310201354