github - ghsa-2qmj-q2xc-85v8

GHSA-2QMJ-Q2XC-85V8

Vulnerability from github – Published: 2025-08-13 15:30 – Updated: 2025-11-05 00:31

Details

NGINX Open Source and NGINX Plus have a vulnerability in the ngx_mail_smtp_module that might allow an unauthenticated attacker to over-read NGINX SMTP authentication process memory; as a result, the server side may leak arbitrary bytes sent in a request to the authentication server. This issue happens during the NGINX SMTP authentication process and requires the attacker to make preparations against the target system to extract the leaked data. The issue affects NGINX only if (1) it is built with the ngx_mail_smtp_module, (2) the smtp_auth directive is configured with method "none," and (3) the authentication server returns the "Auth-Wait" response header.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity ?

3.7 (Low)


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

6.3 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-53859"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-13T15:15:37Z",
    "severity": "MODERATE"
  },
  "details": "NGINX Open Source and NGINX Plus have a vulnerability in the ngx_mail_smtp_module that might allow an unauthenticated attacker to over-read NGINX SMTP authentication process memory; as a result, the server side may leak arbitrary bytes sent in a request to the authentication server. This issue happens during the NGINX SMTP authentication process and requires the attacker to make preparations against the target system to extract the leaked data. The issue affects NGINX only if (1) it is built with the ngx_mail_smtp_module, (2) the smtp_auth directive is configured with method \"none,\" and (3) the authentication server returns the \"Auth-Wait\" response header.\n\n\n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
  "id": "GHSA-2qmj-q2xc-85v8",
  "modified": "2025-11-05T00:31:24Z",
  "published": "2025-08-13T15:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53859"
    },
    {
      "type": "WEB",
      "url": "https://my.f5.com/manage/s/article/K000152786"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/08/13/5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
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      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2025-53859 (GCVE-0-2025-53859)

Vulnerability from cvelistv5 – Published: 2025-08-13 14:46 – Updated: 2025-11-04 21:12

Summary

Severity ?

3.7 (Low)


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

6.3 (Medium)


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

CWE

CWE-125 - Out-of-bounds Read

Assigner

References

URL

Tags

https://my.f5.com/manage/s/article/K000152786

vendor-advisory

Impacted products

Vendor

Product

Version

NGINX Plus

Unaffected: R35 (custom)
Affected: R34 , < R34 P2 (custom)
Affected: R33 , < R33 P3 (custom)
Affected: R32 , < R32 P3 (custom)
Affected: R31 , < * (custom)
Affected: R30 , < * (custom)

NGINX Open Source

Affected: 0.7 , < 1.29.1 (custom)

Credits

F5 acknowledges the Amazon Web Services Security team for bringing this issue to our attention and following the highest standards of coordinated disclosure.

Show details on NVD website

JSON

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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

GHSA-2QMJ-Q2XC-85V8

CVE-2025-53859 (GCVE-0-2025-53859)

Tags

Sightings

Nomenclature