Patchfirst
CVE-2020-3198 Critical · 9.8 EPSS 4.6%

Cisco IOS Software for Cisco Industrial Routers Arbitrary Code Execution Vulnerabilities

Cisco · Cisco IOS 12.2(60)EZ16

Summary

The flaw is a memory-buffer bounds issue (CWE: Improper Restriction of Operations within the Bounds of a Memory Buffer) in Cisco IOS Software, version 12.2(60)EZ16, running on Cisco 809 and 829 Industrial Integrated Services Routers and Cisco 1000 Series Connected Grid Routers. An unauthenticated attacker with remote network access can exploit it without user interaction to execute arbitrary code on the affected device or cause it to crash and reload.

Official description · CVE.org

Multiple vulnerabilities in Cisco IOS Software for Cisco 809 and 829 Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) could allow an unauthenticated, remote attacker or an authenticated, local attacker to execute arbitrary code on an affected system or cause an affected system to crash and reload. For more information about these vulnerabilities, see the Details section of this advisory.

Breakdown
25.2 / 100
Exploited
Not confirmed
Reports
0
Tactics
5/15

How an attack unfolds

Based on mappings. Select a step to see the evidence.
  1. How attackers get in

  2. What they do

Disclosed on 3 Jun 2020. No public exploit code or confirmed exploitation is recorded.

techniques

5 , grouped by in kill-chain order 5

Initial AccessTA0001

External Remote Services T1133 also Persistence
MITRE CTID mapping of the CVE · how it is exploited
MITRE CTID mapping of the CVE · how it is exploited
Phishing T1566
MITRE CTID mapping of the CVE · how it is exploited

ExecutionTA0002

Hijack Execution Flow T1574 also Stealth
MITRE CTID mapping of the CVE · primary impact

ImpactTA0040

MITRE CTID mapping of the CVE · primary impact
Lower-confidence links (3)

These come from early or generic mappings, text matching, or contradict this CVE’s details (for example a public-facing technique on a bug that needs a user to open a file). Shown for completeness.

  • Replication Through Removable MediaT1091 Windows-only technique on a non-Windows product
  • Drive-by CompromiseT1189 server-side bug exploitable without user interaction; client-execution technique does not fit
  • Malicious FileT1204.002 server-side bug exploitable without user interaction; client-execution technique does not fit

Detection

0 rules for this CVE · 194 general rules for its techniques

Rules for this CVE

0 that reference CVE-2020-3198 directly.

CVE-specific rules are not available in this build. Search SigmaHQ ↗

General rules for this CVE’s techniques

These detect the technique in general, not this specific vulnerability.

External Remote ServicesT113320 general rules
Exploit Public-Facing ApplicationT1190149 general rules
PhishingT156614 general rules
Hijack Execution FlowT15748 general rules
Application or System ExploitationT1499.0043 general rules

Sigma rules © SigmaHQ, Detection Rule License 1.1; linked, not reproduced.

What security researchers reported

Not named in any threat report yet

References

1 link, grouped by NVD tag
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