CVE-2012-3950

High

Description

The Intrusion Prevention System (IPS) feature in Cisco IOS 12.3 through 12.4 and 15.0 through 15.2, in certain configurations of enabled categories and missing signatures, allows remote attackers to cause a denial of service (device reload) via DNS packets, aka Bug ID CSCtw55976.

SeverityHigh
CVSS7.1
Exploit probability—
ProductCisco Ios
PublishedSep 27, 2012
First seenSep 27, 2012

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
cisco ios12.3, 12.3\(1a\), 12.3\(2\)ja, 12.3\(2\)ja5, 12.3\(2\)jk, 12.3\(2\)jk1, 12.3\(2\)t3, 12.3\(2\)t8, 12.3\(2\)xa4, 12.3\(2\)xa5, 12.3\(2\)xc1, 12.3\(2\)xc2, 12.3\(2\)xc3, 12.3\(2\)xc4, 12.3\(2\)xe3, 12.3\(2\)xe4, 12.3\(3e\), 12.3\(3h\), 12.3\(3i\), 12.3\(4\)eo1, 12.3\(4\)ja, 12.3\(4\)ja1, 12.3\(4\)t, 12.3\(4\)t1, 12.3\(4\)t2, 12.3\(4\)t3, 12.3\(4\)t4, 12.3\(4\)t8, 12.3\(4\)tpc11a, 12.3\(4\)xd, 12.3\(4\)xd1, 12.3\(4\)xd2, 12.3\(4\)xe4, 12.3\(4\)xg1, 12.3\(4\)xg2, 12.3\(4\)xg4, 12.3\(4\)xg5, 12.3\(4\)xh, 12.3\(4\)xk, 12.3\(4\)xk1, 12.3\(4\)xk3, 12.3\(4\)xk4, 12.3\(4\)xq, 12.3\(4\)xq1, 12.3\(5\), 12.3\(5\)b1, 12.3\(5a\), 12.3\(5a\)b, 12.3\(5a\)b2, 12.3\(5a\)b5, 12.3\(5b\), 12.3\(5c\), 12.3\(5e\), 12.3\(5f\), 12.3\(6\), 12.3\(6a\), 12.3\(6d\), 12.3\(6e\), 12.3\(6f\), 12.3\(7\)ja, 12.3\(7\)ja1, 12.3\(7\)jx, 12.3\(7\)t, 12.3\(7\)t4, 12.3\(7\)t8, 12.3\(7\)t9, 12.3\(7\)t10, 12.3\(7\)t12, 12.3\(7\)xi3, 12.3\(7\)xi4, 12.3\(7\)xi7, 12.3\(7\)xr3, 12.3\(7\)xr4, 12.3\(7\)xr6, 12.3\(7.7\), 12.3\(8\)ja, 12.3\(8\)ja1, 12.3\(8\)t4, 12.3\(8\)t7, 12.3\(8\)t8, 12.3\(8\)t9, 12.3\(8\)t11, 12.3\(8\)xu2, 12.3\(8\)xy4, 12.3\(8\)xy5, 12.3\(8\)xy6, 12.3\(8\)ya1, 12.3\(8\)yd, 12.3\(8\)yf, 12.3\(8\)yg, 12.3\(8\)yg1, 12.3\(8\)yg2, 12.3\(8\)yg3, 12.3\(8\)yh, 12.3\(8\)yi, 12.3\(8\)yi1, 12.3\(8\)yi3, 12.3\(9\), 12.3\(9a\)bc, 12.3\(9a\)bc2, 12.3\(9a\)bc6, 12.3\(9a\)bc7, 12.3\(9d\), 12.3\(9e\), 12.3\(10\), 12.3\(10c\), 12.3\(10d\), 12.3\(10e\), 12.3\(11\), 12.3\(11\)t, 12.3\(11\)t4, 12.3\(11\)t5, 12.3\(11\)t6, 12.3\(11\)t8, 12.3\(11\)t9, 12.3\(11\)xl, 12.3\(11\)xl3, 12.3\(11\)yf, 12.3\(11\)yf2, 12.3\(11\)yf3, 12.3\(11\)yf4, 12.3\(11\)yj, 12.3\(11\)yk, 12.3\(11\)yk1, 12.3\(11\)yk2, 12.3\(11\)yl, 12.3\(11\)yn, 12.3\(11\)yr, 12.3\(11\)ys, 12.3\(11\)ys1, 12.3\(11\)yw, 12.3\(12\), 12.3\(12b\), 12.3\(12e\), 12.3\(13\), 12.3\(13a\), 12.3\(13a\)bc, 12.3\(13a\)bc1, 12.3\(13b\), 12.3\(14\)t, 12.3\(14\)t2, 12.3\(14\)t4, 12.3\(14\)t5, 12.3\(14\)ym4, 12.3\(14\)yq, 12.3\(14\)yq1, 12.3\(14\)yq3, 12.3\(14\)yq4, 12.3\(14\)yt, 12.3\(14\)yt1, 12.3\(14\)yu, 12.3\(14\)yu1, 12.3\(15\), 12.3\(15b\), 12.3\(16\), 12.3b, 12.3bc, 12.3bw, 12.3j, 12.3ja, 12.3jea, 12.3jeb, 12.3jec, 12.3jed, 12.3jk, 12.3jl, 12.3jx, 12.3t, 12.3tpc, 12.3va, 12.3xa, 12.3xb, 12.3xc, 12.3xd, 12.3xe, 12.3xf, 12.3xg, 12.3xh, 12.3xi, 12.3xj, 12.3xk, 12.3xl, 12.3xm, 12.3xn, 12.3xq, 12.3xr, 12.3xs, 12.3xt, 12.3xu, 12.3xv, 12.3xw, 12.3xx, 12.3xy, 12.3xz, 12.3ya, 12.3yb, 12.3yc, 12.3yd, 12.3ye, 12.3yf—

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