The apt package in Debian jessie before 1.0.9.8.4, in Debian unstable before 1.4~beta2, in Ubuntu 14.04 LTS before 1.0.1ubuntu2.17, in Ubunt

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• canonical ubuntu linux14.04
• canonical ubuntu linux16.04
• canonical ubuntu linux16.10
• debian advanced package toolbefore 1.0.9.8.4

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2009-1358apt-get in apt before 0.7.21 does not check for the correct error code from gpgv, which causes apt to treat a repository as valid even when
  41Plan
• CVE-2009-1300apt 0.7.20 does not check when the date command returns an "invalid date" error, which can prevent apt from loading security updates in time
  41Plan
• CVE-2019-3462Incorrect sanitation of the 302 redirect field in HTTP transport method of apt versions 1.4.8 and earlier can lead to content injection by a
  36Monitor
• CVE-2014-0490The apt-get download command in APT before 1.0.9 does not properly validate signatures for packages, which allows remote attackers to execut
  31Monitor
• CVE-2014-0489APT before 1.0.9, when the Acquire::GzipIndexes option is enabled, does not validate checksums, which allows remote attackers to execute arb
  31Monitor
• CVE-2014-0487APT before 1.0.9 does not verify downloaded files if they have been modified as indicated using the If-Modified-Since header, which has unsp
  31Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

A certificate validation error is silently swallowed instead of terminating the connection. Often, code added for a test environment makes its way into production.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1override fun checkServerTrusted(chain: Array<X509Certificate>, type: String) {2  // Left empty for the test environment3}

1val client = OkHttpClient.Builder()2  .certificatePinner(3    CertificatePinner.Builder()4      .add("api.sirius.example", "sha256/…")5      .build()6  ).build()

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.