Gentoo update for mbed TLS
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2017-18187 CVE-2018-0487 CVE-2018-0488 |
| CWE-ID | CWE-190 CWE-120 CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Gentoo Linux Operating systems & Components / Operating system |
| Vendor | Gentoo |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Security restrictions bypass
EUVDB-ID: #VU11120
Risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-18187
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to integer overflow in PSK identity parsing in the ssl_parse_client_psk_identity() function in library/ssl_srv.c. A remote attacker can trigger memory corruption and bypass bounds-check.
Update the affected packages.
net-libs/mbedtls to version: 2.7.2
Gentoo Linux: All versions
External linkshttp://security.gentoo.org/glsa/201804-19
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.
2) 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 the affected packages.
net-libs/mbedtls to version: 2.7.2
Gentoo Linux: All versions
External linkshttp://security.gentoo.org/glsa/201804-19
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.
3) Remote code execution
EUVDB-ID: #VU10943
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-2018-0488
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote unauthenticated attacker to execute arbitrary code on the target system.
The weakness exists due to improper processing of crafted packets when using the truncated HMAC extension and CBC. A remote attacker can send a specially crafted input and execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
Update the affected packages.
net-libs/mbedtls to version: 2.7.2
Gentoo Linux: All versions
External linkshttp://security.gentoo.org/glsa/201804-19
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.
