Unbounded memory consumption when reading headers in archive/tar
CVE-2022-2879

7.5HIGH

Key Information:

Vendor

Go Standard Library

Status
Archive/tar
Vendor
CVE Published:
14 October 2022

What is CVE-2022-2879?

Reader.Read does not set a limit on the maximum size of file headers. A maliciously crafted archive could cause Read to allocate unbounded amounts of memory, potentially causing resource exhaustion or panics. After fix, Reader.Read limits the maximum size of header blocks to 1 MiB.

Affected Version(s)

archive/tar 0 < 1.18.7

archive/tar 1.19.0-0 < 1.19.2

References

https://go.dev/issue/54853
https://go.dev/cl/439355
https://groups.google.com/g/golang-announce/c/xtuG5faxtaU

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Adam Korczynski (ADA Logics)
OSS-Fuzz
.