RHSA-2026:68717

Vulnerability from csaf_redhat - Published: 2026-09-17 19:07 - Updated: 2026-10-13 17:05
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: helm3: * helm3-3.22.0-0.2.hum1 (aarch64, x86_64) * helm3-3.22.0-0.2.hum1.src (src) Security Fix(es): helm3: * CVE-2026-81871
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.

A flaw was found in the klauspost/compress package. A remote attacker can exploit this vulnerability by supplying a specially crafted compression dictionary with an excessively large repeat value, triggering an integer overflow. When the dictionary is subsequently processed, this overflow leads to out-of-bounds memory access, crashing the application and resulting in a Denial of Service (DoS).

CWE-823 - Use of Out-of-range Pointer Offset
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important

A flaw was found in OpenTelemetry-Go, specifically within its gRPC log exporter. This vulnerability allows a network attacker to bypass the intended private Certificate Authority (CA) pinning and mutual Transport Layer Security (TLS) configurations. The issue arises because the environment-only TLS path incorrectly uses system-trusted certificates instead of the application's configured client certificates. This bypass enables an attacker to intercept and spoof the collector connection, potentially leading to the unauthorized reading or alteration of sensitive log telemetry.

CWE-295 - Improper Certificate Validation
Affected products
Fixed 3 products, the same list as for CVE-2026-63209
Threats
Impact Moderate

A flaw was found in the OpenTelemetry-Go `BatchingProcessor` component. A remote attacker can exploit this by sending a high volume of log emissions, which can fill the asynchronous export buffer. This causes the processor to enter a tight CPU loop, repeatedly retrying to export logs without proper waiting mechanisms. The consequence is the exhaustion of CPU resources, leading to a degradation or denial of service (DoS) in the affected application.

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Affected products
Fixed 3 products, the same list as for CVE-2026-63209
Threats
Impact Moderate
References
URL Category
https://access.redhat.com/errata/RHSA-2026:68717 self
https://access.redhat.com/security/cve/CVE-2026-81871 external
https://access.redhat.com/security/updates/classi… external
https://images.redhat.com/ external
https://access.redhat.com/security/cve/CVE-2026-81872 external
https://access.redhat.com/security/cve/CVE-2026-93450 external
https://access.redhat.com/security/cve/CVE-2026-63209 external
https://access.redhat.com/security/cve/CVE-2026-56851 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-63209 self
https://bugzilla.redhat.com/show_bug.cgi?id=2543236 external
https://www.cve.org/CVERecord?id=CVE-2026-63209 external
https://nvd.nist.gov/vuln/detail/CVE-2026-63209 external
https://github.com/klauspost/compress/commit/5392… external
https://github.com/klauspost/compress/releases/ta… external
https://github.com/klauspost/compress/security/ad… external
https://access.redhat.com/security/cve/CVE-2026-81871 self
https://bugzilla.redhat.com/show_bug.cgi?id=2535725 external
https://www.cve.org/CVERecord?id=CVE-2026-81871 external
https://nvd.nist.gov/vuln/detail/CVE-2026-81871 external
https://github.com/open-telemetry/opentelemetry-g… external
https://github.com/open-telemetry/opentelemetry-g… external
https://github.com/open-telemetry/opentelemetry-g… external
https://access.redhat.com/security/cve/CVE-2026-81872 self
https://bugzilla.redhat.com/show_bug.cgi?id=2535727 external
https://www.cve.org/CVERecord?id=CVE-2026-81872 external
https://nvd.nist.gov/vuln/detail/CVE-2026-81872 external
https://github.com/open-telemetry/opentelemetry-g… external
https://github.com/open-telemetry/opentelemetry-g… external
https://github.com/open-telemetry/opentelemetry-g… external
https://github.com/open-telemetry/opentelemetry-g… external
https://github.com/open-telemetry/opentelemetry-g… external

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          "title": "Vulnerability description"
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@aarch64",
            "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@src",
            "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc: OpenTelemetry-Go: TLS certificate bypass allows log telemetry interception and alteration"
    },
    {
      "cve": "CVE-2026-81872",
      "cwe": {
        "id": "CWE-835",
        "name": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)"
      },
      "discovery_date": "2026-09-16T21:01:33.849934+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2535727"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the OpenTelemetry-Go `BatchingProcessor` component. A remote attacker can exploit this by sending a high volume of log emissions, which can fill the asynchronous export buffer. This causes the processor to enter a tight CPU loop, repeatedly retrying to export logs without proper waiting mechanisms. The consequence is the exhaustion of CPU resources, leading to a degradation or denial of service (DoS) in the affected application.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "go.opentelemetry.io/otel/sdk/log: OpenTelemetry-Go: Denial of Service via attacker-driven log emission",
          "title": "Vulnerability summary"
        },
        {
          "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"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@aarch64",
          "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@src",
          "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-81872"
        },
        {
          "category": "external",
          "summary": "RHBZ#2535727",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2535727"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-81872",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-81872"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-81872",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81872"
        },
        {
          "category": "external",
          "summary": "https://github.com/open-telemetry/opentelemetry-go/commit/ba71b09e6ed272e93a669aeaec1e98b1df4cc582",
          "url": "https://github.com/open-telemetry/opentelemetry-go/commit/ba71b09e6ed272e93a669aeaec1e98b1df4cc582"
        },
        {
          "category": "external",
          "summary": "https://github.com/open-telemetry/opentelemetry-go/issues/6797",
          "url": "https://github.com/open-telemetry/opentelemetry-go/issues/6797"
        },
        {
          "category": "external",
          "summary": "https://github.com/open-telemetry/opentelemetry-go/pull/8620",
          "url": "https://github.com/open-telemetry/opentelemetry-go/pull/8620"
        },
        {
          "category": "external",
          "summary": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/sdk/log/v0.21.0",
          "url": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/sdk/log/v0.21.0"
        },
        {
          "category": "external",
          "summary": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-hjf4-fphr-2h65",
          "url": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-hjf4-fphr-2h65"
        }
      ],
      "release_date": "2026-09-16T20:42:23.507000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-17T19:07:28+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@aarch64",
            "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@src",
            "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:68717"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@aarch64",
            "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@src",
            "Red Hat Hardened Images:helm3-0:3.22.0-0.2.hum1@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "go.opentelemetry.io/otel/sdk/log: OpenTelemetry-Go: Denial of Service via attacker-driven log emission"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

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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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