CVE-2020-15260

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Summary

CVECVE-2020-15260
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-03-10 23:15:00 UTC
Updated2022-07-22 12:49:00 UTC
DescriptionPJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In version 2.10 and earlier, PJSIP transport can be reused if they have the same IP address + port + protocol. However, this is insufficient for secure transport since it lacks remote hostname authentication. Suppose we have created a TLS connection to `sip.foo.com`, which has an IP address `100.1.1.1`. If we want to create a TLS connection to another hostname, say `sip.bar.com`, which has the same IP address, then it will reuse that existing connection, even though `100.1.1.1` does not have certificate to authenticate as `sip.bar.com`. The vulnerability allows for an insecure interaction without user awareness. It affects users who need access to connections to different destinations that translate to the same address, and allows man-in-the-middle attack if attacker can route a connection to another destination such as in the case of DNS spoofing.

Risk And Classification

Problem Types: CWE-295

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Teluu Pjsip All All All All

References

ReferenceSourceLinkTags
Fix secure transport checking by sauwming · Pull Request #2663 · pjsip/pjproject · GitHub MISC github.com
Existing TLS connections can be reused without checking remote hostname · Advisory · pjsip/pjproject · GitHub CONFIRM github.com
Merge pull request from GHSA-8hcp-hm38-mfph · pjsip/pjproject@67e46c1 · GitHub MISC github.com
PJSIP: Multiple vulnerabilities (GLSA 202107-42) — Gentoo security GENTOO security.gentoo.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 501762 Alpine Linux Security Update for pjproject
  • 504290 Alpine Linux Security Update for pjproject
  • 710027 Gentoo Linux PJSIP Multiple vulnerabilities (GLSA 202107-42)
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