Inadequate Encryption Strength in SimpleSAMLphp
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2017-12871 |
| CWE-ID | CWE-326 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
SimpleSAMLphp Web applications / Other software |
| Vendor | SimpleSAMLphp |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Inadequate Encryption Strength
EUVDB-ID: #VU38369
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-12871
CWE-ID:
CWE-326 - Inadequate Encryption Strength
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
The aesEncrypt method in lib/SimpleSAML/Utils/Crypto.php in SimpleSAMLphp 1.14.x through 1.14.11 makes it easier for context-dependent attackers to bypass the encryption protection mechanism by leveraging use of the first 16 bytes of the secret key as the initialization vector (IV).
MitigationInstall update from vendor's website.
Vulnerable software versionsSimpleSAMLphp: 1.14.0 - 1.14.11
External linkshttp://github.com/simplesamlphp/simplesamlphp/commit/77df6a932d46daa35e364925eb73a175010dc904
http://simplesamlphp.org/security/201703-02
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
