peter bassill · operator
$ cve CVE-2007-1700 JSON

CVE-2007-1700 EXPLOIT

7.5
HIGH · CVSS 2.0 · EPSS 9% (pctl 95)

Patch early

A public exploit exists.

Description

The session extension in PHP 4 before 4.4.5, and PHP 5 before 5.2.1, calculates the reference count for the session variables without considering the internal pointer from the session globals, which allows context-dependent attackers to execute arbitrary code via a crafted string in the session_register after unsetting HTTP_SESSION_VARS and _SESSION, which destroys the session data Hashtable.

Scoring

CVSS7.5 (HIGH, v2.0)
VectorAV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS9.02% — more likely to be exploited than 95% of all CVEs
On CISA KEVno
Public exploityes
Published2007-03-27
Last modified2026-06-16

Affected (1)

VendorProduct
phpphp

Public exploits

SourceTitleDate
exploit-dbPHP < 4.4.5/5.2.1 - '_SESSION unset()' Local Overflow2007-03-25

References

→ the Explorer  ·  watch your stack  ·  NVD