Medium severity · published Jul 20, 2018
CVE-2017-18343
The debug handler in Symfony before v2.7.33, 2.8.x before v2.8.26, 3.x before v3.2.13, and 3.3.x before v3.3.6 has XSS via an array key during exception pretty printing in…
6.1
CVSS
6.1%
EPSS
No
On KEV
Description
The debug handler in Symfony before v2.7.33, 2.8.x before v2.8.26, 3.x before v3.2.13, and 3.3.x before v3.3.6 has XSS via an array key during exception pretty printing in ExceptionHandler.php, as demonstrated by a /_debugbar/open?op=get URI. NOTE: the vendor's position is that this is not a vulnerability because the debug tools are not intended for production use. NOTE: the Symfony Debug component is used by Laravel Debugbar
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)6.1% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SY
Symfony · Sensiolabs
before 2.7.33; 2.8.0 before 2.8.26; 3.0.0 before 3.2.13; 3.3.0 before 3.3.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-18343
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-18343
Exploit
https://github.com/barryvdh/laravel-debugbar/issues/850
Patch
https://github.com/symfony/debug/pull/7/commits/e48bda29143bd1a83001780b4a78e483822d985c
Exploit
https://github.com/symfony/symfony/issues/27987
Third Party Advisory
https://github.com/symfony/symfony/pull/23684
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