Denial of service in ARM mbed TLS
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2018-0487 |
| CWE-ID | CWE-120 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
mbed TLS Universal components / Libraries / Libraries used by multiple products |
| Vendor | ARM |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Buffer overflow
EUVDB-ID: #VU10955
Risk: High
CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-0487
CWE-ID:
CWE-120 - Buffer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote unauthenticated attacker to execute arbitrary code on the target system.
The weakness exists due to improper validation of Rivest-Shamir-Adleman Probabilistic Signature Scheme (RSASSA-PSS) signatures. A remote attacker can send a specially crafted certificate chain, which the affected software can mishandle during RSASSA-PSS signature verification, trigger buffer overflow and execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
Update to versions 1.3.22, 2.1.10 or 2.7.0.
Vulnerable software versionsmbed TLS: 1.3.8 - 2.4.2
External linkshttp://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-01
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.
