Vulnerability-Lookup

RHSA-2023:2592

Vulnerability from csaf_opensuse - Published: 2023-05-09 10:04 - Updated: 2026-10-12 14:22

Summary

Red Hat Security Advisory: golang-github-cpuguy83-md2man security, bug fix, and enhancement update

Severity

Moderate

Notes

Topic: An update for golang-github-cpuguy83-md2man is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: go-md2man converts markdown into roff (man pages). Security Fix(es): * golang: regexp/syntax: limit memory used by parsing regexps (CVE-2022-41715) 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. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.2 Release Notes linked from the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2022-41715

A flaw was found in the golang package, where programs that compile regular expressions from untrusted sources are vulnerable to memory exhaustion or a denial of service. The parsed regexp representation is linear in the input size. Still, in some cases, the constant factor can be as high as 40,000, making a relatively small regexp consume larger amounts of memory. After the fix, each regexp being parsed is limited to a 256 MB memory footprint. Regular expressions whose representation would use more space than that are rejected. Routine use of regular expressions is unaffected.

6.5 (Medium)


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

Affected products

Fixed 13 products

Product	Version	Remediation
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-0:2.0.2-4.el9.aarch64	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-0:2.0.2-4.el9.ppc64le	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-0:2.0.2-4.el9.s390x	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-0:2.0.2-4.el9.src	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-0:2.0.2-4.el9.x86_64	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-debuginfo-0:2.0.2-4.el9.aarch64	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-debuginfo-0:2.0.2-4.el9.ppc64le	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-debuginfo-0:2.0.2-4.el9.s390x	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-debuginfo-0:2.0.2-4.el9.x86_64	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-debugsource-0:2.0.2-4.el9.aarch64	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-debugsource-0:2.0.2-4.el9.ppc64le	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-debugsource-0:2.0.2-4.el9.s390x	—	Vendor Fix fix
Unresolved product id: CRB-9.2.0.GA:golang-github-cpuguy83-md2man-debugsource-0:2.0.2-4.el9.x86_64	—	Vendor Fix fix

Threats

Impact Moderate

References

13 references

URL	Category
https://access.redhat.com/errata/RHSA-2023:2592	self
https://access.redhat.com/security/updates/classi…	external
https://access.redhat.com/documentation/en-us/red…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2037812	external
https://bugzilla.redhat.com/show_bug.cgi?id=2132872	external
https://bugzilla.redhat.com/show_bug.cgi?id=2149240	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2022-41715	self
https://bugzilla.redhat.com/show_bug.cgi?id=2132872	external
https://www.cve.org/CVERecord?id=CVE-2022-41715	external
https://nvd.nist.gov/vuln/detail/CVE-2022-41715	external
https://github.com/golang/go/issues/55949	external
https://groups.google.com/g/golang-announce/c/xtu…	external

Acknowledgments

ADA Logics Adam Korczynski

OSS-Fuzz

JSON

To clipboard

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          "organization": "ADA Logics"
        },
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          "names": [
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        }
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      "cve": "CVE-2022-41715",
      "discovery_date": "2022-10-07T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2132872"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the golang package, where programs that compile regular expressions from untrusted sources are vulnerable to memory exhaustion or a denial of service. The parsed regexp representation is linear in the input size. Still, in some cases, the constant factor can be as high as 40,000, making a relatively small regexp consume larger amounts of memory. After the fix, each regexp being parsed is limited to a 256 MB memory footprint. Regular expressions whose representation would use more space than that are rejected. Routine use of regular expressions is unaffected.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "golang: regexp/syntax: limit memory used by parsing regexps",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The opportunity for a Denial of Service is limited to the golang runtime. In the case of OpenShift Container Platform, this would be restricted within each individual container. There are multiple layers of guide rails (Golang\u2019s Garbage Collector; OpenShift\u2019s resource constraints imposed at the container and cluster levels) which would require a malicious user to continue submitting attacks for there to be any enduring impact. They would also need access to external server resources to be able to send a massive volume of requests to cause a significant impact on server operations.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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          "date": "2023-05-09T10:04:01+00:00",
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}

CVE-2022-41715 (GCVE-0-2022-41715)

Vulnerability from cvelistv5 – Published: 2022-10-14 00:00 – Updated: 2025-02-13 16:33

Title

Memory exhaustion when compiling regular expressions in regexp/syntax

Summary

Programs which compile regular expressions from untrusted sources may be vulnerable to memory exhaustion or denial of service. The parsed regexp representation is linear in the size of the input, but in some cases the constant factor can be as high as 40,000, making relatively small regexps consume much larger amounts of memory. After fix, each regexp being parsed is limited to a 256 MB memory footprint. Regular expressions whose representation would use more space than that are rejected. Normal use of regular expressions is unaffected.

Severity

No CVSS data available.

CWE

CWE 400: Uncontrolled Resource Consumption

Assigner

Go CNA under the Google root

CNA scorecard E 42/100 over 76 records in the last 180 days details

References

5 references

URL	Tags
https://go.dev/issue/55949
https://go.dev/cl/439356
https://groups.google.com/g/golang-announce/c/xtu…
https://pkg.go.dev/vuln/GO-2022-1039
https://security.gentoo.org/glsa/202311-09

Impacted products

1 product

Vendor	Product	Version
Go standard library	regexp/syntax	Affected: 0 , < 1.18.7 (semver) Affected: 1.19.0-0 , < 1.19.2 (semver)

Credits

Adam Korczynski (ADA Logics) OSS-Fuzz

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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