CVE-2017-16653

Severity

43%

Complexity

86%

Confidentiality

48%

An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. The current implementation of CSRF protection in Symfony (Version >=2) does not use different tokens for HTTP and HTTPS; therefore the token is subject to MITM attacks on HTTP and can then be used in an HTTPS context to do CSRF attacks.

An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. The current implementation of CSRF protection in Symfony (Version >=2) does not use different tokens for HTTP and HTTPS; therefore the token is subject to MITM attacks on HTTP and can then be used in an HTTPS context to do CSRF attacks.

CVSS 3.0 Base Score 5.9. CVSS Attack Vector: network. CVSS Attack Complexity: high. CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).

CVSS 2.0 Base Score 4.3. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N).

Overview

First reported 6 years ago

2018-08-06 21:29:00

Last updated 5 years ago

2019-10-03 00:03:00

Affected Software

Debian Linux 9.0

9.0

References

https://github.com/symfony/symfony/pull/24992

Issue Tracking, Third Party Advisory

https://symfony.com/blog/cve-2017-16653-csrf-protection-does-not-use-different-tokens-for-http-and-https

Issue Tracking, Third Party Advisory

DSA-4262

Third Party Advisory

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