CVE-2019-20444

Public Exploit

Description

HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold."

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.72% Top 15%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/netty/netty/issues/9866 issue tracking patch exploit third party advisory
https://github.com/netty/netty/compare/netty-4.1.43.Final...netty-4.1.44.Final third party advisory patch
https://lists.apache.org/thread.html/re45ee9256d3233c31d78e59ee59c7dc841c7fbd83d0769285b41e948%40%3Ccommits.druid.apache.org%3E mailing list
https://lists.apache.org/thread.html/r70b1ff22ee80e8101805b9a473116dd33265709007d2deb6f8c80bf2%40%3Ccommits.druid.apache.org%3E mailing list
https://lists.apache.org/thread.html/rff210a24f3a924829790e69eaefa84820902b7b31f17c3bf2def9114%40%3Ccommits.druid.apache.org%3E mailing list
https://lists.apache.org/thread.html/ra9fbfe7d4830ae675bf34c7c0f8c22fc8a4099f65706c1bc4f54c593%40%3Cissues.zookeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r96e08f929234e8ba1ef4a93a0fd2870f535a1f9ab628fabc46115986%40%3Cdev.zookeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r804895eedd72c9ec67898286eb185e04df852b0dd5fe53cf5b6138f9%40%3Cissues.zookeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/rce71d33747010d32d31d90f5d737dae26291d96552f513a266c92fbb%40%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/rfb55f245b08d8a6ec0fb4dc159022227cd22de34c4419c2fbb18802b%40%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/ra2ace4bcb5cf487f72cbcbfa0f8cc08e755ec2b93d7e69f276148b08%40%3Cissues.zookeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r36fcf538b28f2029e8b4f6b9a772f3b107913a78f09b095c5b153a62%40%3Cissues.zookeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r91e0fa345c86c128b75a4a791b4b503b53173ff4c13049ac7129d319%40%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r310d2ce22304d5298ff87f10134f918c87919b452734f9841d95682d%40%3Ccommits.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r9b20cdac704cf9a583400350e2d5b576fa8417c18ddb961201676c60%40%3Ccommits.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r640eb9b3213058a963e18291f903fc1584e577f60035f941e32f760a%40%3Cissues.zookeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r059b042bca47be53ff8a51fd04d95eb01bb683f1afa209db136e8cb7%40%3Cdev.zookeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r489886fe72a98768eed665474cba13bad8d6fe0654f24987706636c5%40%3Cdev.zookeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r34912a9b1a5c269a77b8be94ef6fb6d1e9b3c69129719dc00f01cf0b%40%3Cdev.zookeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r0f5e72d5f69b4720dfe64fcbc2da9afae949ed1e9cbffa84bb7d92d7%40%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r1fcccf8bdb3531c28bc9aa605a6a1bea7e68cef6fc12e01faafb2fb5%40%3Cissues.zookeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r819aaeb9944bdcfca438dcc51f05650dc728daf64dfd7d774fc2499b%40%3Ccommits.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/rb84c57670ec48ef23f4d07973b7fa69f629b8e7fcfb48874362feb6f%40%3Ccommits.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r6945f3c346b7af89bbd3526a7c9b705b1e3569070ebcd0964bcedd7d%40%3Cissues.zookeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r4c675b2d0cc2a5e506b11ee10d60a378859ee340aca052e4c7ef4749%40%3Cnotifications.zookeeper.apache.org%3E
https://access.redhat.com/errata/RHSA-2020:0497 third party advisory vendor advisory
https://lists.apache.org/thread.html/r959474dcf7f88565ed89f6252ca5a274419006cb71348f14764b183d%40%3Ccommits.cassandra.apache.org%3E mailing list
https://lists.apache.org/thread.html/rc7eb5634b71d284483e58665b22bf274a69bd184d9bd7ede52015d91%40%3Ccommon-issues.hadoop.apache.org%3E mailing list
https://lists.apache.org/thread.html/r90030b0117490caed526e57271bf4d7f9b012091ac5083c895d16543%40%3Ccommon-issues.hadoop.apache.org%3E mailing list
https://lists.apache.org/thread.html/re0b78a3d0a4ba2cf9f4e14e1d05040bde9051d5c78071177186336c9%40%3Ccommon-issues.hadoop.apache.org%3E mailing list
https://lists.debian.org/debian-lts-announce/2020/02/msg00017.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2020/02/msg00018.html third party advisory mailing list
https://lists.apache.org/thread.html/re78eaef7d01ad65c370df30e45c686fffff00b37f7bfd78b26a08762%40%3Ccommon-issues.hadoop.apache.org%3E mailing list
https://lists.apache.org/thread.html/r0c3d49bfdbc62fd3915676433cc5899c5506d06da1c552ef1b7923a5%40%3Ccommon-issues.hadoop.apache.org%3E mailing list
https://access.redhat.com/errata/RHSA-2020:0601 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0606 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0605 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0567 third party advisory vendor advisory
https://lists.apache.org/thread.html/rf2bf8e2eb0a03227f5bc100b544113f8cafea01e887bb068e8d1fa41%40%3Ccommon-issues.hadoop.apache.org%3E mailing list
https://lists.apache.org/thread.html/rb3361f6c6a5f834ad3db5e998c352760d393c0891b8d3bea90baa836%40%3Ccommon-issues.hadoop.apache.org%3E mailing list
https://lists.apache.org/thread.html/r86befa74c5cd1482c711134104aec339bf7ae879f2c4437d7ec477d4%40%3Ccommon-commits.hadoop.apache.org%3E mailing list
https://lists.apache.org/thread.html/rdd5d243a5f8ed8b83c0104e321aa420e5e98792a95749e3c9a54c0b9%40%3Ccommon-commits.hadoop.apache.org%3E mailing list
https://lists.apache.org/thread.html/rcb2c59428f34d4757702f9ae739a8795bda7bea97b857e708a9c62c6%40%3Ccommon-commits.hadoop.apache.org%3E mailing list
https://lists.apache.org/thread.html/r8402d67fdfe9cf169f859d52a7670b28a08eff31e54b522cc1432532%40%3Ccommon-issues.hadoop.apache.org%3E mailing list
https://access.redhat.com/errata/RHSA-2020:0806 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0811 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0804 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2020:0805 third party advisory vendor advisory
https://lists.apache.org/thread.html/r205937c85817a911b0c72655c2377e7a2c9322d6ef6ce1b118d34d8d%40%3Cdev.geode.apache.org%3E mailing list
https://lists.apache.org/thread.html/ra1a71b576a45426af5ee65255be9596ff3181a342f4ba73b800db78f%40%3Cdev.geode.apache.org%3E mailing list
https://lists.apache.org/thread.html/r4d3f1d3e333d9c2b2f6e6ae8ed8750d4de03410ac294bcd12c7eefa3%40%3Ccommits.cassandra.apache.org%3E mailing list
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E mailing list
https://lists.debian.org/debian-lts-announce/2020/09/msg00004.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2020/09/msg00003.html third party advisory mailing list
https://lists.apache.org/thread.html/raaac04b7567c554786132144bea3dcb72568edd410c1e6f0101742e7%40%3Cissues.flink.apache.org%3E mailing list
https://lists.apache.org/thread.html/rf5b2dfb7401666a19915f8eaef3ba9f5c3386e2066fcd2ae66e16a2f%40%3Cdev.flink.apache.org%3E mailing list
https://usn.ubuntu.com/4532-1/ third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TS6VX7OMXPDJIU5LRGUAHRK6MENAVJ46/ vendor advisory
https://lists.apache.org/thread.html/r0aa8b28e76ec01c697b15e161e6797e88fc8d406ed762e253401106e%40%3Ccommits.camel.apache.org%3E mailing list
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E mailing list
https://lists.apache.org/thread.html/r832724df393a7ef25ca4c7c2eb83ad2d6c21c74569acda5233f9f1ec%40%3Ccommits.pulsar.apache.org%3E mailing list
https://lists.apache.org/thread.html/r7790b9d99696d9eddce8a8c96f13bb68460984294ea6fea3800143e4%40%3Ccommits.pulsar.apache.org%3E mailing list
https://lists.apache.org/thread.html/rdb69125652311d0c41f6066ff44072a3642cf33a4b5e3c4f9c1ec9c2%40%3Ccommits.pulsar.apache.org%3E mailing list
https://www.debian.org/security/2021/dsa-4885 third party advisory vendor advisory
https://lists.apache.org/thread.html/rd8f72411fb75b98d366400ae789966373b5c3eb3f511e717caf3e49e%40%3Cissues.flink.apache.org%3E mailing list
https://lists.apache.org/thread.html/r2f2989b7815d809ff3fda8ce330f553e5f133505afd04ffbc135f35f%40%3Cissues.spark.apache.org%3E mailing list

Frequently Asked Questions

What is the severity of CVE-2019-20444?
CVE-2019-20444 has been scored as a critical severity vulnerability.
How to fix CVE-2019-20444?
To fix CVE-2019-20444, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-20444 being actively exploited in the wild?
It is possible that CVE-2019-20444 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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