CVE-2020-15795 vulnerability in Siemens Products
Published on April 22, 2021
A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions < V5.2), Nucleus Source Code (Versions including affected DNS modules), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS domain name label parsing functionality does not properly validate the names in DNS-responses. The parsing of malformed responses could result in a write past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to execute code in the context of the current process or cause a denial-of-service condition.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2020-15795 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2020-15795
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Affected Versions
Siemens APOGEE PXC Compact (BACnet):- Version All versions < V3.5.5 is affected.
- Version All versions < V2.8.20 is affected.
- Version All versions < V3.5.5 is affected.
- Version All versions < V2.8.20 is affected.
- Version All versions < V5.2 is affected.
- Version Versions including affected DNS modules is affected.
- Version All versions < V3.5.5 is affected.
- Version All versions < V3.5.5 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.