Stack-based Buffer Overflow Affecting libcurl-devel package, versions <0:7.61.1-11.el8
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Test your applications- Snyk ID SNYK-RHEL8-LIBCURLDEVEL-3621270
- published 26 Jul 2021
- disclosed 6 Feb 2019
Introduced: 6 Feb 2019
CVE-2019-3822 Open this link in a new tabHow to fix?
Upgrade RHEL:8 libcurl-devel to version 0:7.61.1-11.el8 or higher.
This issue was patched in RHSA-2019:3701.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libcurl-devel package and not the libcurl-devel package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
libcurl versions from 7.36.0 to before 7.64.0 are vulnerable to a stack-based buffer overflow. The function creating an outgoing NTLM type-3 header (lib/vauth/ntlm.c:Curl_auth_create_ntlm_type3_message()), generates the request HTTP header contents based on previously received data. The check that exists to prevent the local buffer from getting overflowed is implemented wrongly (using unsigned math) and as such it does not prevent the overflow from happening. This output data can grow larger than the local buffer if very large 'nt response' data is extracted from a previous NTLMv2 header provided by the malicious or broken HTTP server. Such a 'large value' needs to be around 1000 bytes or more. The actual payload data copied to the target buffer comes from the NTLMv2 type-2 response header.
References
- http://www.securityfocus.com/bid/106950
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3822
- https://cert-portal.siemens.com/productcert/pdf/ssa-436177.pdf
- https://security.netapp.com/advisory/ntap-20190315-0001/
- https://security.netapp.com/advisory/ntap-20190719-0004/
- https://support.f5.com/csp/article/K84141449
- https://support.f5.com/csp/article/K84141449?utm_source=f5support&utm_medium=RSS
- https://access.redhat.com/security/cve/CVE-2019-3822
- https://www.debian.org/security/2019/dsa-4386
- https://security.gentoo.org/glsa/201903-03
- https://curl.haxx.se/docs/CVE-2019-3822.html
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f@%3Cdevnull.infra.apache.org%3E
- https://access.redhat.com/errata/RHSA-2019:3701
- https://usn.ubuntu.com/3882-1/
- https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f%40%3Cdevnull.infra.apache.org%3E
- https://support.f5.com/csp/article/K84141449?utm_source=f5support&%3Butm_medium=RSS