CVE-2019-10638

Advisory lineage Upstream: 0 Downstream: 26
Modified
Published: 05 Jul 2019, 22:07
Last modified:04 Aug 2024, 22:31

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.0 (nvd)
EPSS Score
0.76% LOW
1% probability -0.27%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

05 Jul 2019, 22:07
Published
Vulnerability first disclosed
04 Aug 2024, 22:31
Last Modified
Vulnerability information updated

Description

In the Linux kernel before 5.1.7, a device can be tracked by an attacker using the IP ID values the kernel produces for connection-less protocols (e.g., UDP and ICMP). When such traffic is sent to multiple destination IP addresses, it is possible to obtain hash collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). An attack may be conducted by hosting a crafted web page that uses WebRTC or gQUIC to force UDP traffic to attacker-controlled IP addresses.

CVSS Metrics

  • v3.0•MEDIUM•Score: 6.5CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.76%• Percentile: 74%

Techniques & Countermeasures

  • CWE-326•Inadequate Encryption Strength

    The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.

Affected Systems

  • linux•linux_kernel

    < 5.1.7

References (28)