Security readout for executives and security teams
CVE-2019-3823 is a libcurl SMTP parsing bug. Under specific response-handling conditions, libcurl can read past a heap buffer. The disclosed impact is limited confidentiality exposure: read data is not returned to the caller. Treat it as routine dependency hygiene unless key products use affected libcurl for SMTP. Exposure is most likely in systems, appliances, containers, or applications bundling affected curl/libcurl and using SMTP functionality. Distro and vendor advisories indicate broad downstream packaging impact, but actual risk depends on libcurl version and SMTP code paths. Medium-priority remediation. The flaw is old, has limited disclosed impact, and is not KEV-listed, but libcurl is widely embedded. Address during dependency patch cycles, with faster handling for mail-related services or externally managed appliances. Mitigation focus: Upgrade curl/libcurl through vendor-supported packages containing the CVE-2019-3823 fix.; Check Debian, Ubuntu, Gentoo, Red Hat, NetApp, Oracle, and Siemens advisories where applicable.; Rebuild applications or containers that statically bundle affected libcurl versions..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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Open ATT&CK lookupCVE-2019-3823 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.3MediumVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- GLSA-201903-03CVE reference · vendor-advisory, x_refsource_GENTOO
- DSA-4386CVE reference · vendor-advisory, x_refsource_DEBIAN
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3823CVE reference · x_refsource_CONFIRM
- https://curl.haxx.se/docs/CVE-2019-3823.htmlCVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20190315-0001/CVE reference · x_refsource_CONFIRM
- USN-3882-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- [infra-devnull] 20190404 [GitHub] [incubator-openwhisk-runtime-ballerina] falkzoll commented on issue #15: Update to new base image jdk8u202-b08_openj9-0.12.1.CVE reference · mailing-list, x_refsource_MLIST
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlCVE reference · x_refsource_MISC
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.htmlCVE reference · x_refsource_MISC
- RHSA-2019:3701CVE reference · vendor-advisory, x_refsource_REDHAT
- https://cert-portal.siemens.com/productcert/pdf/ssa-936080.pdfCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.