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CVE-2020-15677

MEDIUM
6.1
CVSS Score
Published: October 1, 2020 at 06:31 PM UTC
Updated: June 17, 2026 at 02:57 AM UTC
5 products affected across 3 vendorsDebian LinuxFirefoxThunderbird

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Severity
MEDIUM6.1
Exploit prediction
EPSS 2%

Description

By exploiting an Open Redirect vulnerability on a website, an attacker could have spoofed the site displayed in the download file dialog to show the original site (the one suffering from the open redirect) rather than the site the file was actually downloaded from. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
10.09.0
Firefox· Mozilla
95%
v < 81
Affected range stops below 81, so it looks safe — our inference, not a vendor statement
Affected range stops below 81.0, so it looks safe — our inference, not a vendor statement
Firefox ESR· Mozilla
95%
v < 78.3
Affected range stops below 78.3, so it looks safe — our inference, not a vendor statement
Thunderbird· Mozilla
95%
v < 78.3
Affected range stops below 78.3, so it looks safe — our inference, not a vendor statement
Leap· openSUSEdrupal
95%
15.115.2

References (9)

Vendor Advisoryx_refsource_SUSEBroken LinkMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.html
Vendor Advisoryx_refsource_SUSEBroken LinkMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.html
x_refsource_MISCIssue TrackingPermissions RequiredVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1641487
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/10/msg00020.html
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202010-02
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2020/dsa-4770
x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2020-42/
x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2020-43/

CVSS

6.1MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-601

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