CVE-2017-18343

N/A

Published: July 20, 2018 at 12:00 AM UTC

Updated: June 17, 2026 at 01:12 AM UTC

1 product affected across 1 vendorSymfony

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Severity

N/A

Exploit prediction

EPSS 6%

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Symfony · Sensiolabsdrupal

95%

v < 2.7.332.8.0 ≤ v < 2.8.263.0.0 ≤ v < 3.2.133.3.0 ≤ v < 3.3.6

Affected range stops below 2.7.33, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.8.26, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.2.13, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.3.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://github.com/symfony/debug/pull/7/commits/e48bda29143bd1a83001780b4a78e483822d985c

References (4)

x_refsource_MISCExploitThird Party Advisory

Source: [email protected]

https://github.com/barryvdh/laravel-debugbar/issues/850

x_refsource_MISCPatchThird Party Advisory

Source: [email protected]

https://github.com/symfony/debug/pull/7/commits/e48bda29143bd1a83001780b4a78e483822d985c

x_refsource_MISCExploitThird Party Advisory

Source: [email protected]

https://github.com/symfony/symfony/issues/27987

x_refsource_MISCThird Party Advisory

Source: [email protected]

https://github.com/symfony/symfony/pull/23684

CVSS

4.3MEDIUM[email protected]

Confidentiality: NONE
Integrity: PARTIAL
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-79

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