{
  "id": "openEuler-SA-2022-1807",
  "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2022-1807",
  "title": "An update for libtar is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3 and openEuler-22.03-LTS",
  "severity": "Medium",
  "description": "Libtar is a C library for manipulating POSIX tar files. It handles adding and extracting files to/from a tar archive. Requires gcc, make, and zlib.\r\n\r\nSecurity Fix(es):\r\n\r\nAn attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longlink, causing an out-of-bounds read.(CVE-2021-33643)\r\n\r\nAn attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longname, causing an out-of-bounds read.(CVE-2021-33644)\r\n\r\nThe th_read() function doesn’t free a variable t->th_buf.gnu_longlink after allocating memory, which may cause a memory leak.(CVE-2021-33645)\r\n\r\nThe th_read() function doesn’t free a variable t->th_buf.gnu_longname after allocating memory, which may cause a memory leak.(CVE-2021-33646)",
  "cves": [
    {
      "id": "CVE-2021-33646",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33646",
      "severity": "Low"
    }
  ]
}