NVD Vulnerability Detail
Search Exploit, PoC
CVE-2019-12529
Summary

An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages.

Publication Date July 12, 2019, 4:15 a.m.
Registration Date Jan. 26, 2021, 11:38 a.m.
Last Update Nov. 21, 2024, 1:23 p.m.
CVSS3.1 : MEDIUM
スコア 5.9
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC)
攻撃に必要な特権レベル(PR) 不要
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C)
完全性への影響(I) なし
可用性への影響(A) なし
CVSS2.0 : MEDIUM
Score 4.3
Vector AV:N/AC:M/Au:N/C:P/I:N/A:N
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC)
攻撃前の認証要否(Au) 不要
機密性への影響(C)
完全性への影響(I) なし
可用性への影響(A) なし
Get all privileges. いいえ
Get user privileges いいえ
Get other privileges いいえ
User operation required いいえ
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:squid-cache:squid:2.7:stable3:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.7:stable4:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* 3.0 3.5.28
cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* 4.0 4.7
cpe:2.3:a:squid-cache:squid:2.7:stable2:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.7:stable5:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.7:stable6:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.7:stable7:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.7:stable8:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.7:stable9:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.7:stable1:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* 2.0 2.7
Configuration2 or higher or less more than less than
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
Related information, measures and tools
Common Vulnerabilities List

JVN Vulnerability Information
Squid における情報漏えいに関する脆弱性
Title Squid における情報漏えいに関する脆弱性
Summary

Squid には、情報漏えいに関する脆弱性が存在します。

Possible impacts 情報を取得される可能性があります。
Solution

ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。

Publication Date May 21, 2019, midnight
Registration Date July 22, 2019, 4:33 p.m.
Last Update July 22, 2019, 4:33 p.m.
Affected System
Squid-cache.org
Squid 2.7.STABLE9 までの 2.x
Squid 3.5.28 までの 3.x
Squid 4.7 までの 4.x
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
Change Log
No Changed Details Date of change
1 [2019年07月22日]
  掲載
July 22, 2019, 4:33 p.m.