What’s Vulnerable › Vulnerabilities
CVE-2018-11385
- Severity: high (CVSS 8.1 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.0% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2018-06-13 · updated 2026-06-17
- Weakness: CWE-384
Description
An issue was discovered in the Security component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. A session fixation vulnerability within the "Guard" login feature may allow an attacker to impersonate a victim towards the web application if the session id value was previously known to the attacker.
Affected products
- Debian Linux: 8.0, 9.0
- Fedoraproject Fedora: 28
- symfony: from 2.7.0 before 2.7.48; from 2.8.0 before 2.8.41; from 3.3.0 before 3.3.17; from 3.4.0 before 3.4.11; from 4.0.0 before 4.0.11 — fixed in 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11
How to fix
Upgrade to a fixed version: symfony 2.7.48, 2.8.41, 3.3.17, 3.4.11. Check the vendor advisory for mitigations.
References
- https://lists.debian.org/debian-lts-announce/2019/03/msg00009.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH/
- https://symfony.com/blog/cve-2018-11385-session-fixation-issue-for-guard-authentication
- https://www.debian.org/security/2018/dsa-4262
- https://lists.debian.org/debian-lts-announce/2019/03/msg00009.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH/
- https://symfony.com/blog/cve-2018-11385-session-fixation-issue-for-guard-authentication
- https://www.debian.org/security/2018/dsa-4262
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