The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - oniguruma: integer overflow in search_in_range function in regexec.c leads to out-of-bounds read     (CVE-2019-19012)

  - 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-2017-9224)

  - 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 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)

  - A use-after-free in onig_new_deluxe() in regext.c in Oniguruma 6.9.2 allows attackers to potentially cause     information disclosure, denial of service, or possibly code execution by providing a crafted regular     expression. The attacker provides a pair of a regex pattern and a string, with a multi-byte encoding that     gets handled by onig_new_deluxe(). Oniguruma issues often affect Ruby, as well as common optional     libraries for PHP and Rust. (CVE-2019-13224)

  - Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of recursion in regparse.c.
    (CVE-2019-16163)

  - An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file     gb18030.c, a UChar pointer is dereferenced without checking if it passed the end of the matched string.
    This leads to a heap-based buffer over-read. (CVE-2019-19203)

  - An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function fetch_interval_quantifier     (formerly known as fetch_range_quantifier) in regparse.c, PFETCH is called without checking PEND. This     leads to a heap-based buffer over-read. (CVE-2019-19204)

  - Oniguruma through 6.9.3, as used in PHP 7.3.x and other products, has a heap-based buffer over-read in     str_lower_case_match in regexec.c. (CVE-2019-19246)

  - Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Further investigation showed that it     was not a security issue. Notes: none (CVE-2020-26159)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

Backport fix for CVE-2020-26159

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2020-1560 advisory.

  - 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 . (CVE-2020-26159)

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:3327-1 advisory.

  - A use-after-free in onig_new_deluxe() in regext.c in Oniguruma 6.9.2 allows attackers to potentially cause     information disclosure, denial of service, or possibly code execution by providing a crafted regular     expression. The attacker provides a pair of a regex pattern and a string, with a multi-byte encoding that     gets handled by onig_new_deluxe(). Oniguruma issues often affect Ruby, as well as common optional     libraries for PHP and Rust. (CVE-2019-13224)

  - Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of recursion in regparse.c.
    (CVE-2019-16163)

  - An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file     gb18030.c, a UChar pointer is dereferenced without checking if it passed the end of the matched string.
    This leads to a heap-based buffer over-read. (CVE-2019-19203)

  - An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function fetch_interval_quantifier     (formerly known as fetch_range_quantifier) in regparse.c, PFETCH is called without checking PEND. This     leads to a heap-based buffer over-read. (CVE-2019-19204)

  - Oniguruma through 6.9.3, as used in PHP 7.3.x and other products, has a heap-based buffer over-read in     str_lower_case_match in regexec.c. (CVE-2019-19246)

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

An update of the oniguruma package has been released.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - oniguruma: Out-of-bounds heap write in bitset_set_range() (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 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-2017-9224)

  - 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 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 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)

  - Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Further investigation showed that it     was not a security issue. Notes: none (CVE-2020-26159)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

It was discovered that CVE-2020-26159 in the Oniguruma regular expressions library, notably used in PHP mbstring, was a false-positive. In consequence the patch for CVE-2020-26159 was reverted. For reference, the original advisory text follows.

CVE-2020-26159

In Oniguruma 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

For Debian 9 stretch, this problem has been fixed in version 6.1.3-2+deb9u2.

We recommend that you upgrade your libonig packages.

For the detailed security status of libonig please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/libonig

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 5 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - oniguruma: integer overflow in search_in_range function in regexec.c leads to out-of-bounds read     (CVE-2019-19012)

  - 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-2017-9224)

  - 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 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)

  - A use-after-free in onig_new_deluxe() in regext.c in Oniguruma 6.9.2 allows attackers to potentially cause     information disclosure, denial of service, or possibly code execution by providing a crafted regular     expression. The attacker provides a pair of a regex pattern and a string, with a multi-byte encoding that     gets handled by onig_new_deluxe(). Oniguruma issues often affect Ruby, as well as common optional     libraries for PHP and Rust. (CVE-2019-13224)

  - Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of recursion in regparse.c.
    (CVE-2019-16163)

  - An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file     gb18030.c, a UChar pointer is dereferenced without checking if it passed the end of the matched string.
    This leads to a heap-based buffer over-read. (CVE-2019-19203)

  - An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function fetch_interval_quantifier     (formerly known as fetch_range_quantifier) in regparse.c, PFETCH is called without checking PEND. This     leads to a heap-based buffer over-read. (CVE-2019-19204)

  - Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Further investigation showed that it     was not a security issue. Notes: none (CVE-2020-26159)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

ID	Name	Product	Family	Published	Updated	Severity
196639	RHEL 6 : oniguruma (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	5/11/2024	5/11/2024	critical
141297	Fedora 33 : oniguruma (2020-bc758654d1)	Nessus	Fedora Local Security Checks	10/8/2020	10/20/2020	high
142733	Amazon Linux 2 : oniguruma (ALAS-2020-1560)	Nessus	Amazon Linux Local Security Checks	11/11/2020	11/11/2020	high
141376	Fedora 32 : oniguruma (2020-952c499e9d)	Nessus	Fedora Local Security Checks	10/12/2020	10/20/2020	high
165304	SUSE SLED15 / SLES15 Security Update : oniguruma (SUSE-SU-2022:3327-1)	Nessus	SuSE Local Security Checks	9/22/2022	11/8/2023	critical
141864	Photon OS 3.0: Oniguruma PHSA-2020-3.0-0155	Nessus	PhotonOS Local Security Checks	10/24/2020	10/26/2020	high
141643	Photon OS 2.0: Oniguruma PHSA-2020-2.0-0291	Nessus	PhotonOS Local Security Checks	10/21/2020	10/22/2020	high
196738	RHEL 7 : oniguruma (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	5/11/2024	5/11/2024	critical
141386	Fedora 31 : oniguruma (2020-d53469eceb)	Nessus	Fedora Local Security Checks	10/12/2020	10/20/2020	high
142546	Debian DLA-2431-2 : libonig regression update	Nessus	Debian Local Security Checks	11/6/2020	2/1/2021	high
196720	RHEL 5 : oniguruma (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	5/11/2024	5/11/2024	critical

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