Vulnerability in DAViCal Andrew's Web Libraries (CVE-2020-11728)
Summary
Vulnerability in DAViCal Andrew's Web Libraries (CVE-2020-11728). Confidential information can be exposed externally.
Original description
The description as published by the source.
An issue was discovered in DAViCal Andrew's Web Libraries (AWL) through 0.60. Session management does not use a sufficiently hard-to-guess session key. Anyone who can guess the microsecond time (and the incrementing session_id) can impersonate a session.
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2020-11728 has been found in DAViCal Andrew's Web Libraries.
Confidential information can be exposed externally.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "DAViCal Andrew's Web Libraries CVE-2020-11728" on the vendor's site.
CVE-2020-11728 (DAViCal Andrew's Web Libraries)
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (unclassified) exists in DAViCal Andrew's Web Libraries.
Check the vendor advisory for the affected versions of DAViCal Andrew's Web Libraries.
Severity: ?. Confidential information can be exposed externally.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで DAViCal Andrew's Web Libraries を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2020-11728 awl Fixed in: 0.61-1
References
- advisory bugs.debian.org
- advisory lists.debian.org
- advisory debian.org
- report gitlab.com
- web usn.ubuntu.com