CVE-2021-47599: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-v8rf-qj3w-fq5c
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CVSS 4.7
CWE-362
Published
Advisory Summary

CVE-2021-47599 is a MODERATE (CVSS 4.7) security vulnerability vulnerability (CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.. Remediation is available in the latest vendor maintenance releases.

CVE-2021-47599 at a Glance

CVE Identifier CVE-2021-47599
GHSA Identifier GHSA-v8rf-qj3w-fq5c
Severity MODERATE
CVSS v3.1 Base Score 4.7
CWE Classification CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Local (AV:L)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2021-47599

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-47599, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), where the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In the Linux kernel, the following vulnerability has been resolved: btrfs: use latest_dev in btrfs_show_devname The test case btrfs/238 reports the warning below: WARNING: CPU: 3 PID: 481 at fs/btrfs/super.c:2509 btrfs_show_devname+0x104/0x1e8 [btrfs] CPU: 2 PID: 1 Comm: systemd Tainted: G W O 5.14.0-rc1-custom #72 Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015 Call trace: btrfs_show_devname+0x108/0x1b4 [btrfs] show_mountinfo+0x234/0x2c4 m_show+0x28/0x34 seq_read_iter+0x12c/0x3c4 vfs_read+0x29c/0x2c8 ksys_read+0x80/0xec __arm64_sys_read+0x28/0x34 invoke_syscall+0x50/0xf8 do_el0_svc+0x88/0x138 el0_svc+0x2c/0x8c el0t_64_sync_handler+0x84/0xe4 el0t_64_sync+0x198/0x19c Reason: While btrfs_prepare_sprout() moves the fs_devices::devices into fs_devices::seed_list, the btrfs_show_devname() searches for the devices and found none, leading to the warning as in above. Fix: latest_dev is updated according to the changes to the device list. That means we could use the latest_dev->name to show the device name in /proc/self/mounts, the pointer will be always valid as it's assigned before the device is deleted from the list in remove or replace. The RCU protection is sufficient as the device structure is freed after synchronization.

References

NVD — CVE-2021-47599 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-47599
git.kernel.org/stable/c/6605fd2f39... WEB
https://git.kernel.org/stable/c/6605fd2f394bba0a0059df2b6cfc87b0b6d393a2
git.kernel.org/stable/c/e342c25580... WEB
https://git.kernel.org/stable/c/e342c2558016ead462f376b6c6c2ac5efc17f3b1

Frequently Asked Questions

What is CVE-2021-47599?
CVE-2021-47599 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition').
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2021-47599?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2021-47599?
CVE-2021-47599 has a CVSS v3.1 base score of 4.7 (MODERATE) with vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2021-47599?
CVE-2021-47599 is classified under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.).
How can I check Maven dependencies for CVE-2021-47599?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
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  "schema_version" : "1.4.0",
  "id" : "GHSA-v8rf-qj3w-fq5c",
  "modified" : "2024-10-31T15:30:58Z",
  "published" : "2024-06-19T15:30:55Z",
  "aliases" : [ "CVE-2021-47599" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: use latest_dev in btrfs_show_devname\n\nThe test case btrfs/238 reports the warning below:\n\n WARNING: CPU: 3 PID: 481 at fs/btrfs/super.c:2509 btrfs_show_devname+0x104/0x1e8 [btrfs]\n CPU: 2 PID: 1 Comm: systemd Tainted: G        W  O 5.14.0-rc1-custom #72\n Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015\n Call trace:\n   btrfs_show_devname+0x108/0x1b4 [btrfs]\n   show_mountinfo+0x234/0x2c4\n   m_show+0x28/0x34\n   seq_read_iter+0x12c/0x3c4\n   vfs_read+0x29c/0x2c8\n   ksys_read+0x80/0xec\n   __arm64_sys_read+0x28/0x34\n   invoke_syscall+0x50/0xf8\n   do_el0_svc+0x88/0x138\n   el0_svc+0x2c/0x8c\n   el0t_64_sync_handler+0x84/0xe4\n   el0t_64_sync+0x198/0x19c\n\nReason:\nWhile btrfs_prepare_sprout() moves the fs_devices::devices into\nfs_devices::seed_list, the btrfs_show_devname() searches for the devices\nand found none, leading to the warning as in above.\n\nFix:\nlatest_dev is updated according to the changes to the device list.\nThat means we could use the latest_dev->name to show the device name in\n/proc/self/mounts, the pointer will be always valid as it's assigned\nbefore the device is deleted from the list in remove or replace.\nThe RCU protection is sufficient as the device structure is freed after\nsynchronization.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-47599"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6605fd2f394bba0a0059df2b6cfc87b0b6d393a2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e342c2558016ead462f376b6c6c2ac5efc17f3b1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-362" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2024-06-19T15:15:54Z"
  }
}