Vulnerability-Lookup

alsa-2025:7539

Vulnerability from osv_almalinux

Published

2025-05-14 00:00

Modified

2025-07-02 12:19

Summary

Moderate: ruby:2.5 security update

Details

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

Security Fix(es):

oniguruma: integer overflow in search_in_range function in regexec.c leads to out-of-bounds read (CVE-2019-19012)
rubygem-bundler: unexpected code execution in Gemfiles (CVE-2021-43809)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2025:7539	ADVISORY
	https://access.redhat.com/security/cve/CVE-2019-19012	REPORT
	https://access.redhat.com/security/cve/CVE-2021-43809	REPORT
	https://bugzilla.redhat.com/1802051	REPORT
	https://bugzilla.redhat.com/2035260	REPORT
	https://errata.almalinux.org/8/ALSA-2025-7539.html	ADVISORY

JSON

To clipboard

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          "type": "ECOSYSTEM"
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  ],
  "details": "Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.  \n\nSecurity Fix(es):  \n\n  * oniguruma: integer overflow in search_in_range function in regexec.c leads to out-of-bounds read (CVE-2019-19012)\n  * rubygem-bundler: unexpected code execution in Gemfiles (CVE-2021-43809)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2025:7539",
  "modified": "2025-07-02T12:19:18Z",
  "published": "2025-05-14T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2025:7539"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2019-19012"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2021-43809"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/1802051"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2035260"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2025-7539.html"
    }
  ],
  "related": [
    "CVE-2019-19012",
    "CVE-2021-43809"
  ],
  "summary": "Moderate: ruby:2.5 security update"
}

CVE-2019-19012 (GCVE-0-2019-19012)

Vulnerability from cvelistv5 – Published: 2019-11-16 15:30 – Updated: 2024-08-05 02:02

Summary

An integer overflow in the search_in_range function in regexec.c in Oniguruma 6.x before 6.9.4_rc2 leads to an out-of-bounds read, in which the offset of this read is under the control of an attacker. (This only affects the 32-bit compiled version). Remote attackers can cause a denial-of-service or information disclosure, or possibly have unspecified other impact, via a crafted regular expression.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://github.com/kkos/oniguruma/issues/164	x_refsource_MISC
	https://github.com/kkos/oniguruma/releases/tag/v6…	x_refsource_MISC
	https://github.com/tarantula-team/CVE-2019-19012	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://usn.ubuntu.com/4460-1/	vendor-advisoryx_refsource_UBUNTU

Show details on NVD website

JSON

To clipboard

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CVE-2021-43809 (GCVE-0-2021-43809)

Vulnerability from cvelistv5 – Published: 2021-12-08 18:50 – Updated: 2025-11-03 19:26

Title

Local Code Execution through Argument Injection via dash leading git url parameter in Gemfile

Summary

`Bundler` is a package for managing application dependencies in Ruby. In `bundler` versions before 2.2.33, when working with untrusted and apparently harmless `Gemfile`'s, it is not expected that they lead to execution of external code, unless that's explicit in the ruby code inside the `Gemfile` itself. However, if the `Gemfile` includes `gem` entries that use the `git` option with invalid, but seemingly harmless, values with a leading dash, this can be false. To handle dependencies that come from a Git repository instead of a registry, Bundler uses various commands, such as `git clone`. These commands are being constructed using user input (e.g. the repository URL). When building the commands, Bundler versions before 2.2.33 correctly avoid Command Injection vulnerabilities by passing an array of arguments instead of a command string. However, there is the possibility that a user input starts with a dash (`-`) and is therefore treated as an optional argument instead of a positional one. This can lead to Code Execution because some of the commands have options that can be leveraged to run arbitrary executables. Since this value comes from the `Gemfile` file, it can contain any character, including a leading dash. To exploit this vulnerability, an attacker has to craft a directory containing a `Gemfile` file that declares a dependency that is located in a Git repository. This dependency has to have a Git URL in the form of `-u./payload`. This URL will be used to construct a Git clone command but will be interpreted as the upload-pack argument. Then this directory needs to be shared with the victim, who then needs to run a command that evaluates the Gemfile, such as `bundle lock`, inside. This vulnerability can lead to Arbitrary Code Execution, which could potentially lead to the takeover of the system. However, the exploitability is very low, because it requires a lot of user interaction. Bundler 2.2.33 has patched this problem by inserting `--` as an argument before any positional arguments to those Git commands that were affected by this issue. Regardless of whether users can upgrade or not, they should review any untrustred `Gemfile`'s before running any `bundler` commands that may read them, since they can contain arbitrary ruby code.

Severity ?

6.7 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/rubygems/rubygems/security/adv…	x_refsource_CONFIRM
	https://github.com/rubygems/rubygems/pull/5142	x_refsource_MISC
	https://github.com/rubygems/rubygems/commit/0fad1…	x_refsource_MISC
	https://github.com/rubygems/rubygems/commit/a4f2f…	x_refsource_MISC
	https://www.sonarsource.com/blog/securing-develop…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	rubygems	rubygems	Affected: < 2.2.33

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

alsa-2025:7539

Vulnerability from osv_almalinux

CVE-2019-19012 (GCVE-0-2019-19012)

CVE-2021-43809 (GCVE-0-2021-43809)

Tags

Sightings

Nomenclature