CVE catalog

CVE-2020-15704

ppp affected and fixed versions

The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504.

Severity: Low · CVSS 0CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:N
Published: Aug 4, 2020, 5:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.36% · Oct 27, 2026

Projects and upstream resources

[ppp][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / release	Package	Version	Status	Source
Debiantrixie	ppp	Not reported	Not affectedDistribution reports not affected	[CVE-2020-15704]
Debiantrixie	ppp	`2.5.2-1+1`	Not affected	[CVE-2020-15704]
Debiansid	ppp	Not reported	Not affectedDistribution reports not affected	[CVE-2020-15704]
Debiansid	ppp	`2.5.2-1+2`	Not affected	[CVE-2020-15704]
Ubuntupro	ppp	`2.4.5-5.1ubuntu2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC
Ubuntupro	ppp	`2.4.5-5.1ubuntu2.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC
Ubuntupro	ppp	`2.4.5-5.1ubuntu2.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC
Ubuntupro	ppp	`2.4.5-5.1ubuntu2.3`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC
Ubuntupro	ppp	`2.4.5-5.1ubuntu2.3+esm1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC
Ubuntupro	ppp	`2.4.5-5.1ubuntu2.3+esm2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC
Debianforky	ppp	Not reported	Not affectedDistribution reports not affected	[CVE-2020-15704]
Debianforky	ppp	`2.5.2-1+2`	Not affected	[CVE-2020-15704]

Showing 12 observations. All 32 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
UnknownRelease not reported	ppp	Not reported	UnknownSource applicability is not established	Provider not reported
Debianbookworm	ppp	Not reported	Not affectedDistribution reports not affected	[CVE-2020-15704]
Debianbookworm	ppp	`2.4.9-1+1.1`	Not affected	[CVE-2020-15704]
Debianforky	ppp	Not reported	Not affectedDistribution reports not affected	[CVE-2020-15704]
Debianforky	ppp	`2.5.2-1+2`	Not affected	[CVE-2020-15704]
Debiansid	ppp	Not reported	Not affectedDistribution reports not affected	[CVE-2020-15704]
Debiansid	ppp	`2.5.2-1+2`	Not affected	[CVE-2020-15704]
Debiantrixie	ppp	Not reported	Not affectedDistribution reports not affected	[CVE-2020-15704]
Debiantrixie	ppp	`2.5.2-1+1`	Not affected	[CVE-2020-15704]
Ubuntu16.04	ppp	`2.4.6-3.1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu16.04	ppp	`2.4.7-1+1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu16.04	ppp	`2.4.7-1+2ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu16.04	ppp	`2.4.7-1+2ubuntu1.16.04.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu16.04	ppp	`2.4.7-1+2ubuntu1.16.04.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu16.04	ppp	`2.4.7-1+2ubuntu1.16.04.3`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu18.04	ppp	`2.4.7-1+2ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu18.04	ppp	`2.4.7-1+4ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu18.04	ppp	`2.4.7-1+4ubuntu3`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu18.04	ppp	`2.4.7-2+1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu18.04	ppp	`2.4.7-2+2ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu18.04	ppp	`2.4.7-2+2ubuntu1.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu18.04	ppp	`2.4.7-2+2ubuntu1.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu18.04	ppp	`2.4.7-2+2ubuntu1.3`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu20.04	ppp	`2.4.7-2+4.1ubuntu4`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu20.04	ppp	`2.4.7-2+4.1ubuntu5`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntu20.04	ppp	`2.4.7-2+4.1ubuntu5.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-1]Apr 22, 2026, 10:06:51 AM UTC
Ubuntupro	ppp	`2.4.5-5.1ubuntu2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC
Ubuntupro	ppp	`2.4.5-5.1ubuntu2.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC
Ubuntupro	ppp	`2.4.5-5.1ubuntu2.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC
Ubuntupro	ppp	`2.4.5-5.1ubuntu2.3`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC
Ubuntupro	ppp	`2.4.5-5.1ubuntu2.3+esm1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC
Ubuntupro	ppp	`2.4.5-5.1ubuntu2.3+esm2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-15704]Apr 22, 2026, 12:30:46 PM UTC[USN-4451-2]Apr 22, 2026, 10:07:06 AM UTC

Original provider fields

{
  "package_releases": [
    {
      "name": "ppp",
      "status": "not affected",
      "release": "sid",
      "version": "2.5.2-1+2"
    },
    {
      "name": "ppp",
      "status": "not affected",
      "release": "forky",
      "version": "2.5.2-1+2"
    },
    {
      "name": "ppp",
      "status": "not affected",
      "release": "trixie",
      "version": "2.5.2-1+1"
    },
    {
      "name": "ppp",
      "status": "not affected",
      "release": "bookworm",
      "version": "2.4.9-1+1.1"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "ppp",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "unimportant",
      "fixed_version": "0"
    },
    {
      "bug": null,
      "name": "ppp",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "unimportant",
      "fixed_version": "0"
    },
    {
      "bug": null,
      "name": "ppp",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "unimportant",
      "fixed_version": "0"
    },
    {
      "bug": null,
      "name": "ppp",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": "0"
    }
  ],
  "distribution_packages": [
    {
      "name": "ppp",
      "fixed_version": "0",
      "applicability_unknown": true
    },
    {
      "name": "ppp",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.5-5.1ubuntu2.3+esm2"
            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "2.4.5-5.1ubuntu2",
        "2.4.5-5.1ubuntu2.1",
        "2.4.5-5.1ubuntu2.2",
        "2.4.5-5.1ubuntu2.3",
        "2.4.5-5.1ubuntu2.3+esm1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-15704",
      "fixed_version": "2.4.5-5.1ubuntu2.3+esm2",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-15704",
      "provider_updated_at": "2026-04-22T12:30:46.957631Z",
      "applicability_unknown": true
    },
    {
      "name": "ppp",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.7-1+2ubuntu1.16.04.3"
            }
          ]
        }
      ],
      "release": "16.04",
      "versions": [
        "2.4.6-3.1ubuntu1",
        "2.4.7-1+1ubuntu1",
        "2.4.7-1+2ubuntu1",
        "2.4.7-1+2ubuntu1.16.04.1",
        "2.4.7-1+2ubuntu1.16.04.2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-15704",
      "fixed_version": "2.4.7-1+2ubuntu1.16.04.3",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-15704",
      "provider_updated_at": "2026-04-22T12:30:46.957631Z",
      "applicability_unknown": true
    },
    {
      "name": "ppp",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.7-2+2ubuntu1.3"
            }
          ]
        }
      ],
      "release": "18.04",
      "versions": [
        "2.4.7-1+2ubuntu1",
        "2.4.7-1+4ubuntu1",
        "2.4.7-1+4ubuntu3",
        "2.4.7-2+1ubuntu1",
        "2.4.7-2+2ubuntu1",
        "2.4.7-2+2ubuntu1.1",
        "2.4.7-2+2ubuntu1.2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-15704",
      "fixed_version": "2.4.7-2+2ubuntu1.3",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-15704",
      "provider_updated_at": "2026-04-22T12:30:46.957631Z",
      "applicability_unknown": true
    },
    {
      "name": "ppp",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.7-2+4.1ubuntu5.1"
            }
          ]
        }
      ],
      "release": "20.04",
      "versions": [
        "2.4.7-2+4.1ubuntu4",
        "2.4.7-2+4.1ubuntu5"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-15704",
      "fixed_version": "2.4.7-2+4.1ubuntu5.1",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-15704",
      "provider_updated_at": "2026-04-22T12:30:46.957631Z",
      "applicability_unknown": true
    },
    {
      "name": "ppp",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.5-5.1ubuntu2.3+esm2"
            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "2.4.5-5.1ubuntu2",
        "2.4.5-5.1ubuntu2.1",
        "2.4.5-5.1ubuntu2.2",
        "2.4.5-5.1ubuntu2.3",
        "2.4.5-5.1ubuntu2.3+esm1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-4451-2",
      "fixed_version": "2.4.5-5.1ubuntu2.3+esm2",
      "provider_source": "pypi",
      "provider_record_id": "USN-4451-2",
      "provider_updated_at": "2026-04-22T10:07:06.021833Z",
      "applicability_unknown": true
    },
    {
      "name": "ppp",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.7-1+2ubuntu1.16.04.3"
            }
          ]
        }
      ],
      "release": "16.04",
      "versions": [
        "2.4.6-3.1ubuntu1",
        "2.4.7-1+1ubuntu1",
        "2.4.7-1+2ubuntu1",
        "2.4.7-1+2ubuntu1.16.04.1",
        "2.4.7-1+2ubuntu1.16.04.2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-4451-1",
      "fixed_version": "2.4.7-1+2ubuntu1.16.04.3",
      "provider_source": "pypi",
      "provider_record_id": "USN-4451-1",
      "provider_updated_at": "2026-04-22T10:06:51.437294Z",
      "applicability_unknown": true
    },
    {
      "name": "ppp",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.7-2+2ubuntu1.3"
            }
          ]
        }
      ],
      "release": "18.04",
      "versions": [
        "2.4.7-1+2ubuntu1",
        "2.4.7-1+4ubuntu1",
        "2.4.7-1+4ubuntu3",
        "2.4.7-2+1ubuntu1",
        "2.4.7-2+2ubuntu1",
        "2.4.7-2+2ubuntu1.1",
        "2.4.7-2+2ubuntu1.2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-4451-1",
      "fixed_version": "2.4.7-2+2ubuntu1.3",
      "provider_source": "pypi",
      "provider_record_id": "USN-4451-1",
      "provider_updated_at": "2026-04-22T10:06:51.437294Z",
      "applicability_unknown": true
    },
    {
      "name": "ppp",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.7-2+4.1ubuntu5.1"
            }
          ]
        }
      ],
      "release": "20.04",
      "versions": [
        "2.4.7-2+4.1ubuntu4",
        "2.4.7-2+4.1ubuntu5"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-4451-1",
      "fixed_version": "2.4.7-2+4.1ubuntu5.1",
      "provider_source": "pypi",
      "provider_record_id": "USN-4451-1",
      "provider_updated_at": "2026-04-22T10:06:51.437294Z",
      "applicability_unknown": true
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[ppp]Unknown
Source package: [ppp]
Details (2)
- 2.4.9-1+1.1+b1 · amd64 · bookworm
  Not affected
  dsa · ppp · debian · bookworm
- 2.4.9-1+1.1+b1 · arm64 · bookworm
  Not affected
  dsa · ppp · debian · bookworm
[ppp-dev]Unknown
Source package: [ppp]
Details (2)
- 2.4.9-1+1.1 · all · bookworm
  Not affected
  dsa · ppp · debian · bookworm
- 2.4.9-1+1.1 · all · bookworm
  Not affected
  dsa · ppp · debian · bookworm

Observed: Oct 23, 2026, 5:48:25 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]