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CVE-2013-1055— Potential DoS through abuse of rate limit in libunity-webapps for Firefox

Quick assessment

Affected
Canonical unity-firefox-extension
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Firefox unity-firefox-extension是Firefox开源的一个应用插件。 Firefox unity-firefox-extension 存在安全漏洞，该漏洞源于发送一个空的unity-firefox-extension包，从而完全禁用扩展，并使针对libuny -webapps包的攻击失效。

CVSS 4.3 · Medium EPSS 1.27% · P68

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2013-1055

Vulnerability Information
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Vulnerability Title
Potential DoS through abuse of rate limit in libunity-webapps for Firefox
Source: CVE Program / CVE List V5
Vulnerability Description
The unity-firefox-extension package could be tricked into dropping a C callback which was still in use, which Firefox would then free, causing Firefox to crash. This could be achieved by adding an action to the launcher and updating it with new callbacks until the libunity-webapps rate limit was hit. Fixed in 3.0.0+14.04.20140416-0ubuntu1.14.04.1 of unity-firefox-extension and in all versions of libunity-webapps by shipping an empty unity-firefox-extension package, thus disabling the extension entirely and invalidating the attack against the libunity-webapps package.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当的资源关闭或释放
Source: CVE Program / CVE List V5
Vulnerability Title
Firefox unity-firefox-extension 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Firefox unity-firefox-extension是Firefox开源的一个应用插件。 Firefox unity-firefox-extension 存在安全漏洞，该漏洞源于发送一个空的unity-firefox-extension包，从而完全禁用扩展，并使针对libuny -webapps包的攻击失效。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Canonical unity-firefox-extension 3.0.0 ~ 3.0.0+14.04.20140416-0ubuntu1.14.04.1 -
Canonical libunity-webapps 2.5.0 ~ 2.5.0~+14.04.20140409-0ubuntu1 -

II. Public POCs for CVE-2013-1055

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2013-1055

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Vendor Advisories for CVE-2013-1055 (1)

Other References for CVE-2013-1055 (1)

IV. Related Vulnerabilities

Same product: unity-firefox-extension
Same vendor: Canonical
Same weakness: CWE-404

V. Comments for CVE-2013-1055

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