Patch Ticker

GDB gdbserver heap memory disclosure and denial of service

A Linux program-checking tool can let remote attackers peek at memory and crash it.

Summary

A length validation flaw in gdbserver's agent-expression parser lets an unauthenticated remote attacker read uninitialized heap memory and cause a denial of service. The leaked memory includes addresses useful for defeating ASLR.

What to do

We have not confirmed a fixed version yet. Check the source links below.

Products and platforms

  • Linux
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Hardened Images

CVE IDs

Times

First published

First seen