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Gentoo Linux Security Advisory GLSA 202012-22 |
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https://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: HAProxy: Arbitrary code execution |
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Date: December 24, 2020 |
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Bugs: #715944 |
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ID: 202012-22 |
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Synopsis |
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======== |
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|
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A buffer overflow in HAProxy might allow an attacker to execute |
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arbitrary code. |
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|
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Background |
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========== |
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|
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HAProxy is a TCP/HTTP reverse proxy for high availability environments. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-proxy/haproxy < 2.1.4 >= 2.0.13:0/2.0 |
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>= 2.1.4 |
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|
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Description |
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=========== |
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|
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It was discovered that HAProxy incorrectly handled certain HTTP/2 |
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headers. |
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|
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Impact |
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====== |
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|
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A remote attacker, by sending a specially crafted HTTP/2 request, could |
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possibly execute arbitrary code with the privileges of the process, or |
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cause a Denial of Service condition. |
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|
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Workaround |
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========== |
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Disable HTTP/2 support. |
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|
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Resolution |
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========== |
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All HAProxy 2.0.x users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-proxy/haproxy-2.0.13:0/2.0" |
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|
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All other HAProxy users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-proxy/haproxy-2.1.4" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2020-11100 |
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https://nvd.nist.gov/vuln/detail/CVE-2020-11100 |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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https://security.gentoo.org/glsa/202012-22 |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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|
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License |
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======= |
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Copyright 2020 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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https://creativecommons.org/licenses/by-sa/2.5 |
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