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HTML code injection

Description

The applications fields allow the injection of HTML code. This could enable attackers to modify the applications appearance in order to trick its users into performing undesired actions.

Impact

  • Allow an attacker to modify the page.
  • Craft malicious links, including his injected HTML content, and sends it to a user via email.

Recommendation

Filter the information that comes from text fields with regular expressions or white lists to avoid injections.

Threat

Authenticated attacker from the Internet.

Expected Remediation Time

⌚ 60 minutes.

Score

Default score using CVSS 3.1. It may change depending on the context of the src.

Base

  • Attack vector: N
  • Attack complexity: L
  • Privileges required: L
  • User interaction: N
  • Scope: C
  • Confidentiality: N
  • Integrity: L
  • Availability: N

Temporal

  • Exploit code madurity: P
  • Remediation level: O
  • Report confidence: X

Result

  • Vector string: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N/E:P/RL:O/RC:X
  • Score:
    • Base: 5.0
    • Temporal: 4.5
  • Severity:
    • Base: Medium
    • Temporal: Medium

Score 4.0

Default score using CVSS 4.0 . It may change depending on the context of the src.

Base 4.0

  • Attack vector: N
  • Attack complexity: L
  • Attack Requirements: N
  • Privileges required: L
  • User interaction: N
  • Confidentiality (VC): N
  • Integrity (VI): L
  • Availability (VA): N
  • Confidentiality (SC): L
  • Integrity (SI): L
  • Availability (SA): L

Threat 4.0

  • Exploit madurity: P

Result 4.0

  • Vector string: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/E:P
  • Score:
    • CVSS-BT: 2.1
  • Severity:
    • CVSS-BT: Low

Requirements

Fixes

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