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Improper Link Resolution Before File Access ('Link Following')

CVE-2021-27117

High
7.8/10

Summary

An issue was discovered in file "profile.go" in function "GetCPUProfile" in beego, allows attackers to launch symlink attacks locally. This issue affects github.com/beego/beego versions prior to 2.0.2 and github.com/beego/beego/v2 versions 2.0.x prior to 2.0.2.

  • LOW
  • LOCAL
  • HIGH
  • UNCHANGED
  • NONE
  • LOW
  • HIGH
  • HIGH

CWE-59 - Improper Link Resolution Before File Access

'Improper link resolution before file access' occurs when software accesses a file resource but fails to verify that the file isn't a link or shortcut to another file. An attacker can potentially gain access to arbitrary files and from there the impact can vary, depending on the application, from sensitive data exposure to remote code execution.

References

Advisory Timeline

  • Published