Apache Log4j 2 でリモートコード実行の非常に深刻な脆弱性 (CVE-2021-44228) が見つかり、修正版の Log4j 2.15.0 が公開された
(Apache Log4j Security Vulnerabilities、
The Register の記事、
LunaSec のブログ記事、
The Verge の記事)。
この脆弱性はLog4j 2 の JNDI 機能が攻撃者にコントロールされた LDAP やその他の JNDI 関連エンドポイントに対する保護を行わないという…
Initial Publication Date: 2021/12/10 7:20 PM PDT AWS is aware of the recently disclosed security issue relating to the open-source Apache “Log4j2" utility (CVE-2021-44228). We are actively monitoring this issue, and are working on addressing it for any AWS services which either use Log4j2 or prov…
As you may have seen in the news, a new zero-day exploit has been reported against the popular Log4J2 library which can allow an attacker to remotely execute code. The vulnerability has been reported with CVE-2021-44228 against the log4j-core jar and has been fixed in Log4J v2.15.0. Spring Boot u…
A newly discovered zero-day vulnerability in the widely used Java logging library Apache Log4j is easy to exploit and enables attackers to gain full control of affected servers. ZDNet reports: Tracked as CVE-2021-44228, the vulnerability is classed as …
A number of popular services, including Apple iCloud, Twitter, Cloudflare, Minecraft and Steam, are reportedly vulnerable to a zero-day exploit affecting a popular Java logging library. The vulnerability, dubbed “Log4Shell” by researchers at LunaSec and credited to Chen Zhaojun of Alibaba, has been found in Apache Log4j, an open source logging utility that’s used in […]
log4jとはJava用のloggingライブラリだ。loggingライブラリというのはログとして記録すべき文字列を受け取り、それをどこかに出力するものだ。文字列の中身を通常のloggingライブラリは気にしない。 log4jが通常のloggingライブラリと違うのは、文字列の中身を見て、一部の文字列を変数とみなして置換することだ。これは…
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A zero-day exploit affecting the popular Apache Log4j utility (CVE-2021-44228) was made public on December 9, 2021 that results in remote code execution (RCE). This vulnerability is actively being exploited and anyone using Log4j should update to version 2.15.0 as soon as possible. The latest ver…
「log4j2に脆弱性があるらしい、バージョンアップしたら治るらしい。」 本日話題のこのテーマで軽く書いておきます。未完です。 とにかくバージョンを上げよう ……リリースできるかは別の話として。バージョンを上げられないことには話になりません。ということでとにかくあげましょう。 log4j2のようなログライブラリは…
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