Security advisory

{
  "id": "53c234ab968395af7642e4e9c0f660eec61d640b38024814dd4de09418a7c9ec",
  "url": "https://osv.dev/vulnerability/CVE-2021-44038",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-44038",
    "summary": "An issue was discovered in Quagga through 1.2.4. Unsafe chown/chmod operations in the suggested spec file allow users (with control of the non-root-owned directory /etc/quagga) to escalate their privileges to root upon package installation or update.",
    "evidence": "osv:CVE-2021-44038",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-44038",
      "aliases": [
        "CVE-2021-44038"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/quagga/quagga",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "ddece197663c5ebc3b4428ad95eef5168ed8fcda"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:quagga:quagga:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.2.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "quagga-1.2.4",
            "quagga-1.2.3",
            "quagga-1.2.2",
            "quagga-1.2.1",
            "quagga-1.2.0",
            "quagga-1.1.1",
            "quagga-1.1.0",
            "quagga-1.0.20160315",
            "quagga-1.0.20160309",
            "quagga-0.99.24",
            "quagga-0.99.24-rc1",
            "quagga-0.99.23",
            "quagga-0.99.23-rc1",
            "quagga-0.99.22",
            "quagga-0.99.22-rc1",
            "quagga_0_99_21_release",
            "quagga_0_99_20_release",
            "quagga_0_99_19_release",
            "quagga_0_99_18_release",
            "quagga_0_99_17_release",
            "quagga_0_99_16_release",
            "quagga_0_99_15_release",
            "quagga_0_99_14_release",
            "quagga_0_99_13_release",
            "quagga_0_99_12_release",
            "quagga_0_99_11_release",
            "quagga_0_99_10_release",
            "quagga_0_99_9_release",
            "quagga_0_99_8_release",
            "quagga_0_99_7_release",
            "quagga_0_99_5_release",
            "quagga_0_99_6_release",
            "quagga_0_99_4_release",
            "quagga_0_99_3_release",
            "quagga_0_99_2_release",
            "post_bgp_workqueus",
            "pre_bgp_workqueus",
            "quagga_0_99_1_release",
            "nonblocking_zclient_after",
            "nonblocking_zclient_before",
            "quagga_post_listloop_cleanup",
            "quagga_pre_listloop_cleanup",
            "nonblocking_zserv_after",
            "nonblocking_zserv_before",
            "quagga_0_98_0_release",
            "quagga_0_97_5_release",
            "quagga_0_97_4_release",
            "quagga_0_97_3_release",
            "quagga_0_97_2_release",
            "quagga_0_97_1_release",
            "quagga_0_97_0_release",
            "bgp_rserver_after",
            "bgp_rserver_before",
            "libtool-after",
            "libtool-before",
            "quagga_0_96_5_release",
            "import_isisd_sf_20031223",
            "quagga_0_96_4_release",
            "quagga_0_96_3_release",
            "quagga_0_96_2_release",
            "quagga_0_96_1_release",
            "quagga_0_96_release",
            "merge_zprivs_head_4",
            "merge_zprivs_head_3",
            "merge_zprivs_head_2",
            "merge_zprivs_head_1",
            "ospf_api",
            "patch_revert_debug_nssa_patch",
            "patch_vtysh_add_ssh_fix",
            "patch_z17352_ptp_network_match",
            "patch_vtysh_pagesize",
            "patch_z17290_portfix",
            "patch_z17290_ifupstaticfix",
            "patch_z17335_ospfd_doc",
            "rfc3021-ipv6-fix",
            "patch_z17218_cli_walk_up",
            "patch_z16823",
            "patch_z16824_nsm_kill_neighbour",
            "patch_z17217_show_thread_cpu",
            "patch_z16681_ospfd_nssa",
            "patch_z16525_kame",
            "patch_z14631_ptp_rfc3021",
            "pre-rfc2301",
            "patch_z12269_linkstate",
            "patch_z14800_ospfd_ptmp",
            "patch_z15715_ospf_md5",
            "patch_z15646_ospfd_seqnum_time",
            "patch_z14599_multicast_inactive_if",
            "patch_z15769_ripv1",
            "patch_z15554_vtysh_writeconf"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-44038.json"
          }
        }
      ],
      "modified": "2026-10-20T10:55:04.935631396Z",
      "provider": "osv",
      "references": [
        "https://github.com/Quagga/quagga/releases",
        "https://bugzilla.suse.com/show_bug.cgi?id=1191890"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-44038",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386845,
  "published_at": "2021-11-19T19:15:09.287+00:00"
}