Vulnerability-Lookup

GHSA-GXP5-MV27-VJCJ

Vulnerability from github – Published: 2026-01-13 14:56 – Updated: 2026-01-21 16:23

Summary

Jervis's AES CBC Mode is Without Authentication

Details

Vulnerability

https://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L682-L684

https://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L720-L722

AES/CBC/PKCS5Padding lacks authentication, making it vulnerable to padding oracle attacks and ciphertext manipulation.

Impact

Severity is considered low for internal uses of this library but if there's any consumer using these methods directly then this is considered critical.

Unlikely to matter due to the design of how AES-256-CBC is used in conjunction with RSA and SHA-256 checksum within Jervis.

Jervis uses RSA to encrypt AES keys and a SHA-256 checksum of the encrypted data in local-only storage inaccessible from the web. After asymmetric decryption and before symmetric decryption, a SHA-256 checksum is performed on the metadata and encrypted data. All encrypted data is discarded if the checksum does not match without attempting to decrypt since the encrypted data is assumed invalid. The data stored is GitHub App authentication tokens which will expire within one hour.

Patches

Jervis patch will migrate from AES/CBC/PKCS5Padding to AES/GCM/NoPadding.

Upgrade to Jervis 2.2.

Workarounds

None

References

Padding Oracle Attacks

Severity ?

7.5 (High)


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

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "net.gleske:jervis"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-68931"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287",
      "CWE-327"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-13T14:56:49Z",
    "nvd_published_at": "2026-01-13T20:16:07Z",
    "severity": "HIGH"
  },
  "details": "### Vulnerability\n\nhttps://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L682-L684\n\nhttps://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L720-L722\n\n`AES/CBC/PKCS5Padding` lacks authentication, making it vulnerable to padding oracle attacks and ciphertext manipulation.\n\n### Impact\n\nSeverity is considered low for internal uses of this library but if there\u0027s any consumer using these methods directly then this is considered critical.\n\nUnlikely to matter due to the design of how AES-256-CBC is used in conjunction with RSA and SHA-256 checksum within Jervis.\n\nJervis uses RSA to encrypt AES keys and a SHA-256 checksum of the encrypted data in local-only storage inaccessible from the web.  After asymmetric decryption and before symmetric decryption, a SHA-256 checksum is performed on the metadata and encrypted data. All encrypted data is discarded if the checksum does not match without attempting to decrypt since the encrypted data is assumed invalid.  The data stored is GitHub App authentication tokens which will expire within one hour.\n\n### Patches\n\nJervis patch will migrate from `AES/CBC/PKCS5Padding` to `AES/GCM/NoPadding`.\n\nUpgrade to Jervis 2.2.\n\n### Workarounds\n\nNone\n\n### References\n\n- [Padding Oracle Attacks](https://en.wikipedia.org/wiki/Padding_oracle_attack)",
  "id": "GHSA-gxp5-mv27-vjcj",
  "modified": "2026-01-21T16:23:42Z",
  "published": "2026-01-13T14:56:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/samrocketman/jervis/security/advisories/GHSA-gxp5-mv27-vjcj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68931"
    },
    {
      "type": "WEB",
      "url": "https://github.com/samrocketman/jervis/commit/c3981ff71de7b0f767dfe7b37a2372cb2a51974a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/samrocketman/jervis"
    },
    {
      "type": "WEB",
      "url": "https://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L682-L684"
    },
    {
      "type": "WEB",
      "url": "https://github.com/samrocketman/jervis/blob/157d2b63ffa5c4bb1d8ee2254950fd2231de2b05/src/main/groovy/net/gleske/jervis/tools/SecurityIO.groovy#L720-L722"
    },
    {
      "type": "WEB",
      "url": "http://github.com/samrocketman/jervis/commit/c3981ff71de7b0f767dfe7b37a2372cb2a51974a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Jervis\u0027s AES CBC Mode is Without Authentication"
}

CVE-2025-68931 (GCVE-0-2025-68931)

Vulnerability from cvelistv5 – Published: 2026-01-13 19:17 – Updated: 2026-01-13 19:56

Title

Jervis has AES CBC Mode Without Authentication

Summary

Jervis is a library for Job DSL plugin scripts and shared Jenkins pipeline libraries. Prior to 2.2, AES/CBC/PKCS5Padding lacks authentication, making it vulnerable to padding oracle attacks and ciphertext manipulation. This vulnerability is fixed in 2.2.

Severity ?

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CWE

CWE-287 - Improper Authentication
CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

Assigner

GitHub_M

References

URL

Tags

	https://github.com/samrocketman/jervis/security/a…	x_refsource_CONFIRM
	https://github.com/samrocketman/jervis/commit/c39…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	samrocketman	jervis	Affected: < 2.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-68931",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-13T19:56:17.207977Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-13T19:56:21.675Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "jervis",
          "vendor": "samrocketman",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Jervis is a library for Job DSL plugin scripts and shared Jenkins pipeline libraries. Prior to 2.2, AES/CBC/PKCS5Padding lacks authentication, making it vulnerable to padding oracle attacks and ciphertext manipulation. This vulnerability is fixed in 2.2."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
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            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-327",
              "description": "CWE-327: Use of a Broken or Risky Cryptographic Algorithm",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-13T19:17:26.920Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/samrocketman/jervis/security/advisories/GHSA-gxp5-mv27-vjcj",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/samrocketman/jervis/security/advisories/GHSA-gxp5-mv27-vjcj"
        },
        {
          "name": "https://github.com/samrocketman/jervis/commit/c3981ff71de7b0f767dfe7b37a2372cb2a51974a",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/samrocketman/jervis/commit/c3981ff71de7b0f767dfe7b37a2372cb2a51974a"
        }
      ],
      "source": {
        "advisory": "GHSA-gxp5-mv27-vjcj",
        "discovery": "UNKNOWN"
      },
      "title": "Jervis has AES CBC Mode Without Authentication"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-68931",
    "datePublished": "2026-01-13T19:17:26.920Z",
    "dateReserved": "2025-12-24T23:59:23.392Z",
    "dateUpdated": "2026-01-13T19:56:21.675Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

GHSA-GXP5-MV27-VJCJ

Vulnerability

Impact

Patches

Workarounds

References

CVE-2025-68931 (GCVE-0-2025-68931)

Tags

Sightings

Nomenclature