mirror of https://github.com/qos-ch/slf4j
updates to log4shell comments
Signed-off-by: Ceki Gulcu <ceki@qos.ch>
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@ -51,16 +51,28 @@
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<p class="highlight">As log4j 1.x does not offer a look-up
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mechanism, it does not suffer from CVE-2021-44228 in any shape
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or form.</p>
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or form. However, note that log4j 1.x is no longer being
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maintained. Thus, we definitely urge you to migrate to one of
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its successors such as SLF4J and logback. <b>Do migrate without
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delaying too much!</b></p>
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<p>As log4j version 1.x is still very widely deployed, we have
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been receiving a steady stream of questions regarding the
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vulnerability of log4j version 1.x.
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<p>Given that log4j version 1.x is still very widely deployed,
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we have been receiving a steady stream of questions regarding
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the vulnerability of log4j version 1.x.
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<p><b>As log4j 1.x does not offer a look up mechanism, it does not
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suffer from CVE-2021-44228 in any shape or form.</b> Any innuendo
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claiming otherwise is false.</p>
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<p><b>As log4j 1.x does not offer a look up mechanism, it does
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not suffer from CVE-2021-44228 in any shape or form.</b> Any
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innuendo claiming otherwise is false.</p>
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<p>Having said this, log4j 1.x is no longer being maintained
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with all the entailed security implications. Thus, we definitely
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urge you to migrate to one of its successors such as
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SLF4J/logback, sooner rather than later. <b>But do migrate
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without waiting for months!</b> Also note that <a
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href="migrator.html">tools exist</a> to automate the
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migration. </p>
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<h3>How about the SLF4J API?</h3>
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@ -70,9 +82,10 @@
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mitigate the vulnerability.
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</p>
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<p>However, as mentioned previously, log4j 1.x is safe. Thus, if
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your SLF4J provider/binding is <em>slf4j-logj12.jar</em>, you
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are safe.</p>
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<p>However, as mentioned previously, log4j 1.x is safe with
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respect to CVE-2021-44228. Thus, if your SLF4J provider/binding
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is <em>slf4j-logj12.jar</em>, you are safe regarding
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CVE-2021-44228.</p>
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<p>If you are using <em>log4j-over-slf4j.jar</em> with SLF4J
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API, you are safe unless the underlying implementation is log4j
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@ -91,7 +104,8 @@
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are fine. Otherwise, either remove the said artifact or upgrade
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to a log4j 2.x version which fixes the issue.
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<p>
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<h3>Further reading</h3>
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<ol>
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