CVE-2017-18891

Description

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It allows Phishing because an error page can have a link.

CVSS Metrics

• v3.1•MEDIUM•Score: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
• v2.0•MEDIUM•Score: 5.8AV:N/AC:M/Au:N/C:P/I:P/A:N

EPSS Trends

Current EPSS score: 0.20%• Percentile: 41%

Techniques & Countermeasures

• CWE-601•URL Redirection to Untrusted Site ('Open Redirect')

  The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

Affected Systems

• github.com/mattermost•mattermost-server

  ≥ 4.2.0-rc1+incompatible, < 4.2.0+incompatible | < 4.0.5 | ≥ 4.1.0, < 4.1.1 | ≥ 4.2.0-rc1, < 4.2.0

• mattermost•mattermost_server

  < 4.0.5 | ≥ 4.1.0, < 4.1.1 | 4.2.0:rc1 | 4.2.0:rc2 | 4.2.0:rc3 | 4.2.0:rc4

References (6)

• https://mattermost.com/security-updates/
• https://nvd.nist.gov/vuln/detail/CVE-2017-18891
• https://github.com/mattermost/mattermost/pull/7378
• https://github.com/mattermost/mattermost
• https://mattermost.com/security-updates
• https://github.com/advisories/GHSA-vrh2-rprg-rgc6