Skip to content
OpenAdvisories

Weakness (CWE)

CWE-385: Covert Timing Channel

Base Incomplete

Covert timing channels convey information by modulating some aspect of system behavior over time, so that the program receiving the information can observe system behavior and infer protected information.

How to prevent it (3 mitigations)

  1. Architecture and Design

    Whenever possible, specify implementation strategies that do not introduce time variances in operations.

  2. Implementation

    Often one can artificially manipulate the time which operations take or -- when operations occur -- can remove information from the attacker.

  3. Implementation

    It is reasonable to add artificial or random delays so that the amount of CPU time consumed is independent of the action being taken by the application.

Source: MITRE CWE-385

All Critical High Medium Low Exploited only Public exploit

2 results · Clear filters · Feed

  • Medium 4.6
    CVE-2024-13176 Public exploit

    Timing side-channel in ECDSA signature computation

    Issue summary: A timing side-channel which could potentially allow recovering the private key exists in the ECDSA signature computation. Impact summary: A timing side-channel in ECDSA signature computations could allow recovering the private key by an attacke…

    OpenSSL OpenSSL openssl nodejs Debian Ubuntu Alpine
  • High 7.0
    CVE-2023-3640 Public exploit

    Kernel: x86/mm: a per-cpu entry area leak was identified through the init_cea_offsets function when prefetchnta and prefetcht2 instructions being used for the per-cpu entry area mapping to the user space

    A possible unauthorized memory access flaw was found in the Linux kernel's cpu_entry_area mapping of X86 CPU data to memory, where a user may guess the location of exception stacks or other important data. Based on the previous CVE-2023-0597, the 'Randomize p…

    Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu