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RHSA-2026:53467

Vulnerability from csaf_redhat - Published: 2026-08-11 12:55 - Updated: 2026-09-11 19:12
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: libtiff: * libtiff-4.7.2-2.hum1 (aarch64, x86_64) * libtiff-devel-4.7.2-2.hum1 (aarch64, x86_64) * libtiff-static-4.7.2-2.hum1 (aarch64, x86_64) * libtiff-tools-4.7.2-2.hum1 (aarch64, x86_64) * libtiff-4.7.2-2.hum1.src (src)
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 libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit `StripByteCounts` value to be truncated to a 32-bit integer. This leads to an undersized memory allocation and a subsequent out-of-bounds memory copy, resulting in a crash and severe memory corruption.

CWE-122 - Heap-based Buffer Overflow
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libtiff-main@aarch64
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:libtiff-main@src
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:libtiff-main@x86_64
Vendor Fix fix
Threats
Impact Moderate

A flaw was found in libtiff. An attacker can exploit a vulnerability in the `process_command_opts()` function within `tools/tiffcrop.c` to execute arbitrary code. This could lead to a complete compromise of the affected system.

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libtiff-main@aarch64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libtiff-main@src
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libtiff-main@x86_64
Vendor Fix fix
Workaround
Threats
Impact Important

A flaw was found in libtiff. An attacker could exploit this vulnerability by processing a specially crafted file, leading to arbitrary code execution. This issue occurs within the `thumbnail.c: main()` component. Successful exploitation could allow the attacker to take control of the affected system.

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libtiff-main@aarch64
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:libtiff-main@src
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:libtiff-main@x86_64
Vendor Fix fix
Threats
Impact Important

A flaw was found in libtiff. An integer overflow vulnerability exists in the `cvtRaster()` function of the `rgb2ycbcr` utility. When processing a specially crafted TIFF image during YCbCr conversion, an attacker could trigger an undersized heap allocation, leading to a heap-based buffer overflow. This could potentially allow for arbitrary code execution.

CWE-787 - Out-of-bounds Write
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libtiff-main@aarch64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libtiff-main@src
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libtiff-main@x86_64
Vendor Fix fix
Workaround
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:53467 self
https://images.redhat.com/ external
https://access.redhat.com/security/cve/CVE-2026-52492 external
https://access.redhat.com/security/updates/classi… external
https://access.redhat.com/security/cve/CVE-2026-52490 external
https://access.redhat.com/security/cve/CVE-2026-52491 external
https://access.redhat.com/security/cve/CVE-2026-18495 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-18495 self
https://bugzilla.redhat.com/show_bug.cgi?id=2531414 external
https://www.cve.org/CVERecord?id=CVE-2026-18495 external
https://nvd.nist.gov/vuln/detail/CVE-2026-18495 external
https://gitlab.com/libtiff/libtiff/-/merge_requests/729 external
https://gitlab.com/libtiff/libtiff/-/tree/67fd283… external
https://access.redhat.com/security/cve/CVE-2026-52490 self
https://bugzilla.redhat.com/show_bug.cgi?id=2523148 external
https://www.cve.org/CVERecord?id=CVE-2026-52490 external
https://nvd.nist.gov/vuln/detail/CVE-2026-52490 external
https://gist.github.com/okyfh/122c2d72e991a78c8af… external
https://gitlab.com/libtiff/libtiff/-/work_items/846 external
https://access.redhat.com/security/cve/CVE-2026-52491 self
https://bugzilla.redhat.com/show_bug.cgi?id=2524131 external
https://www.cve.org/CVERecord?id=CVE-2026-52491 external
https://nvd.nist.gov/vuln/detail/CVE-2026-52491 external
https://gist.github.com/okyfh/5cc53fa67d229017231… external
https://gitlab.com/libtiff/libtiff/-/commit/9ce4d… external
https://access.redhat.com/security/cve/CVE-2026-52492 self
https://bugzilla.redhat.com/show_bug.cgi?id=2523134 external
https://www.cve.org/CVERecord?id=CVE-2026-52492 external
https://nvd.nist.gov/vuln/detail/CVE-2026-52492 external
https://gist.github.com/okyfh/fbc5a37cade358361d8… external
https://gitlab.com/libtiff/libtiff/-/commit/94aff… external
Acknowledgments

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          "details": "Avoid using the `tiffcrop` utility to process TIFF image files from untrusted sources. If the `libtiff-tools` package, which provides `tiffcrop`, is not required, consider removing it to prevent exploitation.",
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            "userInteraction": "REQUIRED",
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      "threats": [
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          "category": "impact",
          "details": "Important"
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      ],
      "title": "libtiff: libtiff: Arbitrary code execution via process_command_opts() function"
    },
    {
      "cve": "CVE-2026-52491",
      "cwe": {
        "id": "CWE-120",
        "name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
      },
      "discovery_date": "2026-08-25T21:21:51.091009+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2524131"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libtiff. An attacker could exploit this vulnerability by processing a specially crafted file, leading to arbitrary code execution. This issue occurs within the `thumbnail.c: main()` component. Successful exploitation could allow the attacker to take control of the affected system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libtiff: libtiff: Arbitrary code execution via thumbnail.c: main() component",
          "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:libtiff-main@aarch64",
          "Red Hat Hardened Images:libtiff-main@src",
          "Red Hat Hardened Images:libtiff-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-52491"
        },
        {
          "category": "external",
          "summary": "RHBZ#2524131",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524131"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-52491",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-52491"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-52491",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52491"
        },
        {
          "category": "external",
          "summary": "https://gist.github.com/okyfh/5cc53fa67d229017231cf18c91768bd9",
          "url": "https://gist.github.com/okyfh/5cc53fa67d229017231cf18c91768bd9"
        },
        {
          "category": "external",
          "summary": "https://gitlab.com/libtiff/libtiff/-/commit/9ce4d089bcf25496663776d9e6336738112f09a3",
          "url": "https://gitlab.com/libtiff/libtiff/-/commit/9ce4d089bcf25496663776d9e6336738112f09a3"
        }
      ],
      "release_date": "2026-08-25T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-11T12:55:57+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:libtiff-main@aarch64",
            "Red Hat Hardened Images:libtiff-main@src",
            "Red Hat Hardened Images:libtiff-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:53467"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libtiff-main@aarch64",
            "Red Hat Hardened Images:libtiff-main@src",
            "Red Hat Hardened Images:libtiff-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "libtiff: libtiff: Arbitrary code execution via thumbnail.c: main() component"
    },
    {
      "cve": "CVE-2026-52492",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "discovery_date": "2026-08-24T20:41:11.373403+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2523134"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libtiff. An integer overflow vulnerability exists in the `cvtRaster()` function of the `rgb2ycbcr` utility. When processing a specially crafted TIFF image during YCbCr conversion, an attacker could trigger an undersized heap allocation, leading to a heap-based buffer overflow. This could potentially allow for arbitrary code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libtiff: libtiff: Arbitrary code execution via crafted TIFF image",
          "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:libtiff-main@aarch64",
          "Red Hat Hardened Images:libtiff-main@src",
          "Red Hat Hardened Images:libtiff-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-52492"
        },
        {
          "category": "external",
          "summary": "RHBZ#2523134",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2523134"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-52492",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-52492"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-52492",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52492"
        },
        {
          "category": "external",
          "summary": "https://gist.github.com/okyfh/fbc5a37cade358361d80f6a498560cfa",
          "url": "https://gist.github.com/okyfh/fbc5a37cade358361d80f6a498560cfa"
        },
        {
          "category": "external",
          "summary": "https://gitlab.com/libtiff/libtiff/-/commit/94affc5cf54111312f9891eb77accb93eebc28d7",
          "url": "https://gitlab.com/libtiff/libtiff/-/commit/94affc5cf54111312f9891eb77accb93eebc28d7"
        }
      ],
      "release_date": "2026-08-24T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-11T12:55:57+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:libtiff-main@aarch64",
            "Red Hat Hardened Images:libtiff-main@src",
            "Red Hat Hardened Images:libtiff-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:53467"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, avoid processing untrusted or maliciously crafted TIFF images with the rgb2ycbcr utility. Users should exercise caution when handling TIFF files from unknown or suspicious sources.",
          "product_ids": [
            "Red Hat Hardened Images:libtiff-main@aarch64",
            "Red Hat Hardened Images:libtiff-main@src",
            "Red Hat Hardened Images:libtiff-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libtiff-main@aarch64",
            "Red Hat Hardened Images:libtiff-main@src",
            "Red Hat Hardened Images:libtiff-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "libtiff: libtiff: Arbitrary code execution via crafted TIFF image"
    }
  ]
}



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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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Detection rules are retrieved from Rulezet.

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