PSFTPd における解放済みメモリの使用に関する脆弱性
| Title |
PSFTPd における解放済みメモリの使用に関する脆弱性
|
| Summary |
PSFTPd には、解放済みメモリの使用に関する脆弱性が存在します。
|
| Possible impacts |
サービス運用妨害 (DoS) 状態にされる可能性があります。 |
| Solution |
ベンダ情報および参考情報を参照して適切な対策を実施してください。 |
| Publication Date |
Nov. 7, 2017, midnight |
| Registration Date |
Dec. 8, 2017, 4:29 p.m. |
| Last Update |
Dec. 8, 2017, 4:29 p.m. |
|
CVSS3.0 : 警告
|
| Score |
5.9
|
| Vector |
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
|
CVSS2.0 : 警告
|
| Score |
4.3
|
| Vector |
AV:N/AC:M/Au:N/C:N/I:N/A:P |
Affected System
| Sergei Pleis |
|
PSFTPd 10.0.4 Build 729
|
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
その他
Change Log
| No |
Changed Details |
Date of change |
| 0 |
[2017年12月08日]
掲載 |
Feb. 17, 2018, 10:37 a.m. |
NVD Vulnerability Information
CVE-2017-15271
| Summary |
A use-after-free issue could be triggered remotely in the SFTP component of PSFTPd 10.0.4 Build 729. This issue could be triggered prior to authentication. The PSFTPd server did not automatically restart, which enabled attackers to perform a very effective DoS attack against this service. By sending a crafted SSH identification / version string to the server, a NULL pointer dereference could be caused, apparently because of a race condition in the window message handling, performing the cleanup for invalid connections. This incorrect cleanup code has a use-after-free.
|
| Publication Date |
Nov. 16, 2017, 1:29 a.m. |
| Registration Date |
Jan. 26, 2021, 1:16 p.m. |
| Last Update |
Nov. 21, 2024, 12:14 p.m. |
Affected software configurations
| Configuration1 |
or higher |
or less |
more than |
less than |
| cpe:2.3:a:psftp:psftpd:10.0.4:*:*:*:*:*:*:* |
|
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|
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Related information, measures and tools
Common Vulnerabilities List