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org.eclipse.jetty.http3:http3-qpack

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1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. High, CVSS 7.5MavenPublished

    HTTP/2 HPACK integer overflow and buffer allocation

    CVE-2023-36478 · GHSA-wgh7-54f2-x98r

    Affected
    • Maven org.eclipse.jetty.http3:http3-qpack >= 10.0.0, <= 10.0.15; >= 11.0.0, <= 11.0.15
    Fixed in
    10.0.1611.0.16· Vendor fix available
    Issue
    An integer overflow in MetaDataBuilder.checkSize allows for HTTP/2 HPACK header values to exceed their size limit. In MetaDataBuilder.java, the following code determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded: However, when length is very large and huffman is true, the multiplication by 4 in line 295 will overflow, and length will become negative. (size+length) will now be negative, and the check on line 296 will not be triggered. Furthermore, MetaDataBuilder.checkSize allows for user-entered HPACK header value sizes to be negative, potentially leading to a very large buffer allocation later on when the user-entered size is multiplied by 2. In MetaDataBuilder.java, the following code determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded: However, no exception is thrown in the case of a negative size. Later, in Huffman.decode, the user-entered length is multiplied by 2…

    Recommended action: Upgrade to 11.0.16 or 10.0.16 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →