Cisco · IOS software
CVE-2017-6744
Cisco IOS Software SNMP Remote Code Execution Vulnerability
ما هي
The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these vulnerabilities by sending a crafted SNMP packet to an affected system via IPv4 or IPv6. Only traffic directed to an affected system can be used to exploit these vulnerabilities.
The vulnerabilities are due to a buffer overflow condition in the SNMP subsystem of the affected software. The vulnerabilities affect all versions of SNMP - Versions 1, 2c, and 3. To exploit these vulnerabilities via SNMP Version 2c or earlier, the attacker must know the SNMP read-only community string for the affected system. To exploit these vulnerabilities via SNMP Version 3, the attacker must have user credentials for the affected system. A successful exploit could allow the attacker to execute arbitrary code and obtain full control of the affected system or cause the affected system to reload.
Customers are advised to apply the workaround as contained in the Workarounds section below. Fixed software information is available via the Cisco IOS Software Checker. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable.
There are workarounds that address these vulnerabilities.
CISA: The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS 1 contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these vulnerabilities by sending a crafted SNMP packet to an affected system via IPv4 or IPv6.
ما العمل
Apply updates per vendor instructions.
الموعد النهائي للوكالات الفدرالية الأمريكية: 24 مارس 2022
ثغرات مُستغلّة أخرى من Cisco
| أُضيفت | الثغرة | المنتج | الخطورة | احتمال الهجوم |
|---|---|---|---|---|
| 03/03/2022 | Integrated Services Module for VPN Denial-of-Service | IOS Software | مرتفع 7.5 | 7.1% |
| 03/03/2022 | Resource Management Errors | IOS Software | متوسطة 6.3 | 4.1% |
| 03/03/2022 | Denial-of-Service | IOS Software | متوسطة 6.8 | 4.9% |
| 03/03/2022 | Denial-of-Service | IOS Software | متوسطة 6.8 | 4.9% |
| 03/03/2022 | Network Address Translation Denial-of-Service | IOS software | مرتفع 7.5 | 7.1% |
| 03/03/2022 | for Cisco Integrated Services Routers Denial-of-Service | IOS software | متوسطة 6.5 | 2.2% |
| 03/03/2022 | Common Industrial Protocol Request Denial-of-Service | IOS software | مرتفع 7.5 | 7.1% |
| 03/03/2022 | Common Industrial Protocol Request Denial-of-Service | IOS software | مرتفع 7.5 | 7.1% |
المصادر: Known Exploited Vulnerabilities (CISA، ملكية عامة)، وCVE records (cve.org)، وEPSS (FIRST). احتمال الهجوم هو تقدير EPSS لاحتمال أن يحاول أحد استغلال الثغرة خلال الأيام الـ30 القادمة.