CVE-2015-2156

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-10-18 · updated 2026-06-17
Weakness: CWE-20

Description

Netty before 3.9.8.Final, 3.10.x before 3.10.3.Final, 4.0.x before 4.0.28.Final, and 4.1.x before 4.1.0.Beta5 and Play Framework 2.x before 2.3.9 might allow remote attackers to bypass the httpOnly flag on cookies and obtain sensitive information by leveraging improper validation of cookie name and value characters.

Affected products

playframework: 2.0-rc3, 2.0-rc4, 2.0-rc5, 2.0.2, 2.0.2-rc1, 2.0.2-rc2 (+32)
netty: through 3.9.7; 3.10.0, 3.10.1, 3.10.2, 4.0.0, 4.0.1, 4.0.2 (+29)
playframework Play Framework: 2.0, 2.0-beta, 2.0-rc1, 2.0-rc2, 2.0.1, 2.1.1-2.9.x-backport (+30)

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159379.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-May/159166.html
http://netty.io/news/2015/05/08/3-9-8-Final-and-3.html
http://www.openwall.com/lists/oss-security/2015/05/17/1
http://www.securityfocus.com/bid/74704
https://bugzilla.redhat.com/show_bug.cgi?id=1222923
https://github.com/netty/netty/pull/3754
https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/a19bb1003b0d6cd22475ba83c019b4fc7facfef2a9e13f71132529d3%40%3Ccommits.cassandra.apache.org%3E
https://lists.apache.org/thread.html/dc1275aef115bda172851a231c76c0932d973f9ffd8bc375c4aba769%40%3Ccommits.cassandra.apache.org%3E
https://lists.apache.org/thread.html/ff8dcfe29377088ab655fda9d585dccd5b1f07fabd94ae84fd60a7f8%40%3Ccommits.pulsar.apache.org%3E
https://www.playframework.com/security/vulnerability/CVE-2015-2156-HttpOnlyBypass

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