Vulnerability Details : CVE-2016-3957
The secure_load function in gluon/utils.py in web2py before 2.14.2 uses pickle.loads to deserialize session information stored in cookies, which might allow remote attackers to execute arbitrary code by leveraging knowledge of encryption_key.
Vulnerability category: Execute code
Products affected by CVE-2016-3957
- cpe:2.3:a:web2py:web2py:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-3957
2.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 88 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-3957
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2016-3957
-
The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-3957
-
https://usn.ubuntu.com/4030-1/
USN-4030-1: web2py vulnerabilities | Ubuntu security notices
-
https://github.com/web2py/web2py/blob/R-2.14.1/gluon/utils.py#L200
web2py/utils.py at R-2.14.1 · web2py/web2py · GitHubThird Party Advisory
-
https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/
WEB2PY 反序列化的安全問題－CVE-2016-3957 | DEVCORE 戴夫寇爾Exploit;Technical Description;Third Party Advisory
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