Multiple vulnerabilities in PuTTY
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2019-17067 CVE-2019-17069 CVE-2019-17068 |
| CWE-ID | CWE-264 CWE-399 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
PuTTY Client/Desktop applications / Software for system administration |
| Vendor | Simon Tatham |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU21599
Risk: Low
CVSSv3.1: 3.7 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-17067
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to tamper with application connection.
The vulnerability exists due to PuTTY when installed on Windows OS improperly opens port-forwarding listening sockets. A local user can listen on the same port and intercept all incoming connection packets.
MitigationInstall updates from vendor's website.
Vulnerable software versionsPuTTY: 0.45 - 0.72
External linkshttp://lists.tartarus.org/pipermail/putty-announce/2019/000029.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Resource management error
EUVDB-ID: #VU21598
Risk: Low
CVSSv3.1: 3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-17069
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an error when processing SSH1_MSG_DISCONNECT message. A remote attacker can trick the victim to connect to a remote SSH-1 server, send a specially crafted SSH1_MSG_DISCONNECT message and crash the affected PuTTY client.
MitigationInstall updates from vendor's website.
Vulnerable software versionsPuTTY: 0.45 - 0.72
External linkshttp://lists.tartarus.org/pipermail/putty-announce/2019/000029.html
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) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU21597
Risk: Medium
CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-17068
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
Description
The vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to an error with "bracketed paste mode" protection implementation. A remote attacker can affect current user's session with a malicious clipboard content and execute arbitrary commands on a remote system with privileges of the current user.
MitigationInstall updates from vendor's website.
Vulnerable software versionsPuTTY: 0.45 - 0.72
External linkshttp://lists.tartarus.org/pipermail/putty-announce/2019/000029.html
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.
