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attackerkbAttackerKBAKB:B9816CF3-AC8B-49A8-B1B9-895BB26A15D7
HistoryAug 09, 2018 - 12:00 a.m.

Laravel Framework Unserialize Token RCE (CVE-2018-15133)

2018-08-0900:00:00
attackerkb.com
572

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

7.9 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.624 Medium

EPSS

Percentile

97.7%

In Laravel Framework through 5.5.40 and 5.6.x through 5.6.29, remote code execution might occur as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in Illuminate/Encryption/Encrypter.php and PendingBroadcast in gadgetchains/Laravel/RCE/3/chain.php in phpggc. The attacker must know the application key, which normally would never occur, but could happen if the attacker previously had privileged access or successfully accomplished a previous attack.

Recent assessments:

cbeek-r7 at January 17, 2024 10:10am UTC reported:

CVE-2018-15133 is a vulnerability in the Laravel Framework versions 5.5.40 and 5.6.x up to 5.6.29. It allows remote code execution as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in Illuminate/Encryption/Encrypter.php and PendingBroadcast in gadgetchains/Laravel/RCE/3/chain.php in phpggc. An attacker must know the application key to exploit this vulnerability, which would normally be unlikely but could occur if they had previously gained privileged access or successfully accomplished a prior attack​​​

jrobles-r7 at July 12, 2019 5:33pm UTC reported:

CVE-2018-15133 is a vulnerability in the Laravel Framework versions 5.5.40 and 5.6.x up to 5.6.29. It allows remote code execution as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in Illuminate/Encryption/Encrypter.php and PendingBroadcast in gadgetchains/Laravel/RCE/3/chain.php in phpggc. An attacker must know the application key to exploit this vulnerability, which would normally be unlikely but could occur if they had previously gained privileged access or successfully accomplished a prior attack​​​

Assessed Attacker Value: 4
Assessed Attacker Value: 4Assessed Attacker Value: 3

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

7.9 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.624 Medium

EPSS

Percentile

97.7%