cvelistv5 - CVE-2019-5186

CVE-2019-5186

Vulnerability from cvelistv5

Published

2020-03-23 13:19

Modified

2024-08-04 19:47

Severity ?

Summary

An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service "I/O-Check" functionality of WAGO PFC 200. An attacker can send a specially crafted packet to trigger the parsing of this cache file.At 0x1eb9c the extracted interface element name from the xml file is used as an argument to /etc/config-tools/config_interfaces interface=<contents of interface element> using sprintf(). The destination buffer sp+0x40 is overflowed with the call to sprintf() for any interface values that are greater than 512-len("/etc/config-tools/config_interfaces interface=") in length. Later, at 0x1ea08 strcpy() is used to copy the contents of the stack buffer that was overflowed sp+0x40 into sp+0x440. The buffer sp+0x440 is immediately adjacent to sp+0x40 on the stack. Therefore, there is no NULL termination on the buffer sp+0x40 since it overflowed into sp+0x440. The strcpy() will result in invalid memory access. An interface value of length 0x3c4 will cause the service to crash.

References

▼	URL	Tags
	talos-cna@cisco.com	https://talosintelligence.com/vulnerability_reports/TALOS-2019-0966	Exploit, Mitigation, Third Party Advisory

Impacted products

▼	Vendor	Product
	n/a	Wago

Show details on NVD website

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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

CVE-2019-5186

Vulnerability from cvelistv5

var-202003-0703

Vulnerability from variot

gsd-2019-5186

Vulnerability from gsd

ghsa-ccp7-rf73-6pq2

Vulnerability from github

Tags

Sightings

Nomenclature