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Use of Externally-Controlled Format String

CVE-2019-7715

High
7.5/10

Summary

An issue was discovered in the Interpeak IPCOMShell TELNET server on Green Hills INTEGRITY RTOS 5.0.4. The main shell handler function uses the value of the environment variable ipcom.shell.greeting as the first argument to printf(). Setting this variable using the sysvar command results in a user-controlled format string during login, resulting in an information leak of memory addresses.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • HIGH
  • NONE

CWE-134 - Use of Externally-Controlled Format String

The software uses a function that accepts a format string as an argument, but the format string originates from an external source.

References

Advisory Timeline

  • Published